Comparing three supplier quotes
Three quotes for the same driveway base course that can't be compared at a glance: different descriptions and units, GST shown different ways, delivery priced differently, and one arithmetic slip. This is the real QuantDoc engine running on them; nothing here is mocked up.
The requirement: 40 tonnes of 20mm crushed aggregate and 12 tonnes of washed bedding sand, delivered to site.
This example is deliberately unresolved: one cost is still unknown, so no supplier can honestly be called cheapest yet.
1. The source quotes (PDF)
Try a user assumption: bulk density
One supplier prices sand by the cubic metre. QuantDoc won't guess how many tonnes that is: it needs a density, which is your assumption. With it set, that line becomes comparable but is marked Estimated.
Review needed
Check 3 points across 2 quotes before choosing a supplier.
No supplier recommendation until the figures and scope are reviewed against the source.
3 points should be checked before relying on the ranking.
3 figure checks · 0 scope judgements
Unable to verify this comparison yet — here's what needs clarifying
Until these are answered, no supplier can be called the cheapest overall.
- Coastal Landscape Supplies lists delivery but hasn't priced it yet.
- These suppliers priced different quantities. We've lined their prices up to the same quantity using each supplier's own rate.
- At least one quote has figures that don't add up. Check before you accept it.
Ridgeline Quarries Pty Ltd
Lowest full-job cost- Price as quoted As quoted
- $2,934.00
- Ex GST
- Same items, same basis Normalised
- Not comparable
- Only items every supplier quotes equivalently.
- Full job cost NormalisedVerified
- $2,934.00
Coastal Landscape Supplies
1 issue- Price as quoted As quoted
- $2,740.00
- Ex GST
- Same items, same basis Normalised
- Not comparable
- Only items every supplier quotes equivalently.
- Full job cost Normalised
- Unknown
- Known so far: $2,740.00 · Missing: delivery"20mm crushed aggregate" is not confirmed as the same specification.
Metro Aggregates & Hire
1 issue- Price as quoted As quoted
- $2,575.00
- Ex GST
- Same items, same basis Normalised
- Not comparable
- Only items every supplier quotes equivalently.
- Full job cost Normalised
- Unknown
- Known so far: $2,538.13"20mm crushed aggregate" is not confirmed as the same specification."Washed bedding sand" is not confirmed as the same specification.
What each quote covers
| Part of the job | Ridgeline Quarries Pty Ltd | Coastal Landscape Supplies | Metro Aggregates & Hire |
|---|---|---|---|
| Supply(needed) | Priced$2,564.00 | Priced$2,740.00 | Priced$2,540.00 |
| Delivery(needed) | Priced$370.00 | To be advisedPrice to be advised — unknown, not zero. | IncludedStated as included. |
Side-by-side comparison
| Item | Ridgeline Quarries Pty Ltd | Coastal Landscape Supplies | Metro Aggregates & Hire |
|---|---|---|---|
| 20mm crushed aggregateMain itemNot directly comparable | |||
| Washed bedding sandMain itemNot directly comparable | |||
| Delivery - tipper loadsNot directly comparable | |||
| Environmental levyNot directly comparable | |||
| Price as quoted As quoted | $2,934.00 | $2,740.00 | $2,575.00 |
| Same items, same basis Normalised | Not comparable | Not comparable | Not comparable |
| Full job cost Normalised | $2,934.00 | Unknown | Unknown |
“Unknown” means the quote doesn't give a usable figure — it is never treated as $0. “Included” means the supplier says it's part of another price.
Cost breakdown by category
| Category | Ridgeline Quarries Pty Ltd | Coastal Landscape Supplies | Metro Aggregates & Hire |
|---|---|---|---|
| $2,564.00 | $2,740.00 | $2,540.00 | |
| $370.00 | Unknown | Included | |
| Not quoted | Not quoted | $35.00 |
Your assumptions
- Bulk density
- 1.6 t/m³
- Waste allowance
- None
- Contingency
- None
- Hire hours / days
- Not set · Not set
In your own comparisons you can set density, hire hours, waste, contingency and dated exchange rates here.
What-if scenarios
Switch to the Professional view for weighted supplier evaluation.
Missing items and warnings
Ridgeline Quarries Pty Ltd
Checkno matching item for "Environmental levy"
Another supplier quotes this item, but no equivalent line was found in this quote. It may be missing, bundled into another line, or described differently.
Coastal Landscape Supplies
Must resolvedelivery price to be advised
delivery / freight to site is listed without a price. It is treated as unknown, not zero.
Must resolveunpriced item
"Freight to site" has no confirmed price (marked TBA). It is treated as unknown, not zero.
Checkno matching item for "Environmental levy"
Another supplier quotes this item, but no equivalent line was found in this quote. It may be missing, bundled into another line, or described differently.
Checkmatch needs confirmation
Quantities differ (2 ea vs 1 ea). Weak evidence that these are the same item.
Checkmatch needs confirmation
Described differently ("crushed", "drainage"); the specification needs checking. Quantities converted kilograms → tonnes (exact).
Noteshort validity (14 days)
Prices are only held for a short period; plan the decision accordingly.
Metro Aggregates & Hire
Checkpossible calculation issue
Possible calculation issue: 8 × 70 = 560.00, but the line shows 590.
Checkmatch needs confirmation
Described differently ("washed"); the specification needs checking. Quantities converted cubic metres → tonnes using an assumption: Density 1.6 t/m³. Quantities differ (12 t vs 8 m3).
Checkmatch needs confirmation
Quantities differ (2 ea vs 1 ea). Weak evidence that these are the same item.
Checkmatch needs confirmation
Described differently ("crushed", "screened"); the specification needs checking. Quantities converted cubic metres → tonnes using an assumption: Density 1.6 t/m³.
Across all quotes
CheckDifferent quantities quoted for "Delivery - tipper loads"
Suppliers quote 2 ea vs 1 ea. Confirm the quantity you need.
NoteDifferent quantities quoted for "Washed bedding sand"
Suppliers quote 12 t vs 12 t vs 12.8 t. Prices are aligned to your required quantity at each supplier's quoted rate.
Questions to ask each supplier
Ridgeline Quarries Pty Ltd
0 of 1 answeredPlease confirm whether your quote covers "Environmental levy", and its price if not included.Why: Another supplier quotes this item, but no equivalent line was found in this quote. It may be missing, bundled into another line, or described differently.
Email draft to Ridgeline Quarries Pty Ltd
To: sales@ridgeline.example
Subject: Clarification on your quotation (your ref. RQ-24117)
Hi Ridgeline Quarries Pty Ltd, Thank you for your quotation (your ref. RQ-24117) for the driveway base course. Before we make a decision, could you please help with the following: 1. Please confirm whether your quote covers "Environmental levy", and its price if not included. A revised quotation covering these points would be appreciated. Kind regards,
Coastal Landscape Supplies
0 of 5 answeredPlease provide a firm price for the items currently marked TBA or unpriced.Why: delivery / freight to site is listed without a price. It is treated as unknown, not zero.
Please confirm whether your quote covers "Environmental levy", and its price if not included.Why: Another supplier quotes this item, but no equivalent line was found in this quote. It may be missing, bundled into another line, or described differently.
Please confirm the exact product/specification quoted for "Delivery - tipper loads" (brand, grade, size).Why: Quantities differ (2 ea vs 1 ea). Weak evidence that these are the same item.
Please confirm the exact product/specification quoted for "20mm crushed aggregate" (brand, grade, size).Why: Described differently ("crushed", "drainage"); the specification needs checking. Quantities converted kilograms → tonnes (exact).
Please confirm how long these prices are held.Why: Prices are only held for a short period; plan the decision accordingly.
Email draft to Coastal Landscape Supplies
To: orders@coastal-landscape.example
Subject: Clarification on your quotation (your ref. CLS-8841)
Hi Coastal Landscape Supplies, Thank you for your quotation (your ref. CLS-8841) for the driveway base course. Before we make a decision, could you please help with the following: 1. Please provide a firm price for the items currently marked TBA or unpriced. 2. Please confirm whether your quote covers "Environmental levy", and its price if not included. 3. Please confirm the exact product/specification quoted for "Delivery - tipper loads" (brand, grade, size). 4. Please confirm the exact product/specification quoted for "20mm crushed aggregate" (brand, grade, size). 5. Please confirm how long these prices are held. A revised quotation covering these points would be appreciated. Kind regards,
Metro Aggregates & Hire
0 of 5 answeredPlease check the line extensions and totals — our check found a possible difference.Why: Possible calculation issue: 8 × 70 = 560.00, but the line shows 590.
Please confirm the exact product/specification quoted for "Washed bedding sand" (brand, grade, size).Why: Described differently ("washed"); the specification needs checking. Quantities converted cubic metres → tonnes using an assumption: Density 1.6 t/m³. Quantities differ (12 t vs 8 m3).
Please confirm the exact product/specification quoted for "Delivery - tipper loads" (brand, grade, size).Why: Quantities differ (2 ea vs 1 ea). Weak evidence that these are the same item.
Please confirm the exact product/specification quoted for "20mm crushed aggregate" (brand, grade, size).Why: Described differently ("crushed", "screened"); the specification needs checking. Quantities converted cubic metres → tonnes using an assumption: Density 1.6 t/m³.
Please confirm the lead time / delivery date.Why: No lead time or delivery terms were found.
Email draft to Metro Aggregates & Hire
To: quotes@metro-agg.example
Subject: Clarification on your quotation (your ref. MA-3302)
Hi Metro Aggregates & Hire, Thank you for your quotation (your ref. MA-3302) for the driveway base course. Before we make a decision, could you please help with the following: 1. Please check the line extensions and totals — our check found a possible difference. 2. Please confirm the exact product/specification quoted for "Washed bedding sand" (brand, grade, size). 3. Please confirm the exact product/specification quoted for "Delivery - tipper loads" (brand, grade, size). 4. Please confirm the exact product/specification quoted for "20mm crushed aggregate" (brand, grade, size). 5. Please confirm the lead time / delivery date. A revised quotation covering these points would be appreciated. Kind regards,
Review extracted data
Ridgeline Quarries Pty Ltd
ridgeline-quarries-quote.pdf · Quote · Version 1 · 1 page
Review not yet confirmed
Review checklist
Lines reconcile with the quoted total; nothing to review.
- Reference
- RQ-24117
- Quote date
- 14 Oct 2026
- Valid until
- 30 days
- Currency
- AUD
- Prices are
- Ex GST
- Payment terms
- 30 days EOM.
- Lead time
- 3 working days from order.
- Delivery terms
- Not stated
- Warranty
- Not stated
- Stated subtotal
- $2,934.00
- Stated GST
- $293.40
- Stated total
- $3,227.40
Lines reconcile. Priced lines add up to $2,934.00; the quote states a subtotal of $2,934.00.
| Description | Qty | Unit | Rate | Amount | GST | Status | Confidence | Actions |
|---|---|---|---|---|---|---|---|---|
| 40 | t | $48.50 | $1,940.00 | GST not stated | priced | high | ||
| 12 | t | $52.00 | $624.00 | GST not stated | priced | high | ||
| 2 | ea | $185.00 | $370.00 | GST not stated | priced | high |
Inclusions and exclusions
- inclusionDelivery and tipping on site (truck access required)
- exclusionSpreading and compaction
- exclusionTraffic control
Other terms (2)
- validity Quote valid for 30 days.
- lead time Lead time: 3 working days from order.
Coastal Landscape Supplies
coastal-landscape-supplies-quote.pdf · Quote · Version 1 · 1 page
Needs review · 2 open
Review checklist
Figure checks · 2 open
Prices, totals and tax read from the document.
Coastal Landscape Supplies: a figure doesn't reconcile
Check"Freight to site" has no confirmed price (marked TBA). It is treated as unknown, not zero.
Coastal Landscape Supplies: 1 line is not priced
Check“Freight to site” has no price (TBA or unreadable). Unknown is not zero: ask the supplier or enter an estimate as a scenario.
Enter the price on the line (pencil icon) when the supplier confirms it.
Coastal Landscape Supplies: no inclusions or exclusions stated. The quote doesn't list what it includes or excludes. Confirm the scope with the supplier if anything is unclear.
- Reference
- CLS-8841
- Quote date
- 16 Oct 2026
- Valid until
- 14 days
- Currency
- AUD
- Prices are
- Inc GST
- Payment terms
- COD
- Lead time
- next-day delivery subject to availability.
- Delivery terms
- Not stated
- Warranty
- Not stated
- Stated subtotal
- Not stated
- Stated GST
- Not stated
- Stated total
- $3,014.00
Lines reconcile. Priced lines add up to $3,014.00; the quote states a total of $3,014.00.
| Description | Qty | Unit | Rate | Amount | GST | Status | Confidence | Actions |
|---|---|---|---|---|---|---|---|---|
| 40,000 | kg | $0.06 | $2,288.00 | GST not stated | priced | high | ||
| 12,000 | kg | $0.06 | $726.00 | GST not stated | priced | high | ||
| 1 | ea | — | To be advised | GST not stated | tba | medium |
Inclusions and exclusions
None stated in the quote.
Other terms (3)
- special Freight to be advised on confirmation of delivery address.
- special Prices valid for 14 days.
- lead time Lead time: next-day delivery subject to availability.
Metro Aggregates & Hire
metro-aggregates-quote.pdf · Quote · Version 1 · 1 page
Needs review · 1 open
Review checklist
Figure checks · 1 open
Prices, totals and tax read from the document.
Metro Aggregates & Hire: a figure doesn't reconcile
CheckPossible calculation issue: 8 × 70 = 560.00, but the line shows 590.
- Reference
- MA-3302
- Quote date
- 15 Oct 2026
- Valid until
- 30 Nov 2026
- Currency
- AUD
- Prices are
- Ex GST
- Payment terms
- 7 days from invoice.
- Lead time
- Not stated
- Delivery terms
- Not stated
- Warranty
- Not stated
- Stated subtotal
- $2,575.00
- Stated GST
- $257.50
- Stated total
- $2,832.50
Lines reconcile. Priced lines add up to $2,575.00; the quote states a subtotal of $2,575.00.
| Description | Qty | Unit | Rate | Amount | GST | Status | Confidence | Actions |
|---|---|---|---|---|---|---|---|---|
| 25 | m3 | $78.00 | $1,950.00 | GST not stated | priced | high | ||
| 8 | m3 | $70.00 | $590.00 | GST not stated | priced | medium | ||
| 1 | ea | — | Included | GST not stated | included | medium | ||
| 1 | ea | $35.00 | $35.00 | GST not stated | priced | high |
Inclusions and exclusions
- exclusionUnloading by hand
- exclusionSite access charges
Other terms (1)
- validity Valid until 30/11/2026.
Conclusion
INCOMPLETE — Ridgeline Quarries Pty Ltd is the lowest fully-priced quote, but Coastal Landscape Supplies has unknown costs, and Metro Aggregates & Hire quotes a specification not confirmed as equivalent. No overall winner can be declared yet.
- Missing3 points should be checked before relying on the ranking.
- MissingNo item is quoted equivalently by every supplier, so there is no like-for-like price comparison yet. Review the conditional matches.
- MissingCoastal Landscape Supplies's complete cost is unknown: delivery, "20mm crushed aggregate" is not confirmed as the same specification, 1 unpriced line. Unknown costs are not treated as zero.
- MissingMetro Aggregates & Hire's complete cost is unknown: "20mm crushed aggregate" is not confirmed as the same specification, "Washed bedding sand" is not confirmed as the same specification. Unknown costs are not treated as zero.
- CalculationRidgeline Quarries Pty Ltd has the most complete quotation (fewest missing or unclear scope items).
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