Material Quote Comparison & Buy Window

Private planning, with no supplier feed required. Example values are illustrative. Replace them with your actual quotes. Inputs stay in this browser; quote information is not sent to suppliers. Edits will save on this device.

01 / Define a comparable package

Start with the same scope

Package name Net units required Waste allowance (%)

The calculator buys whole packs to cover required units plus waste. Both quotes must use the same underlying unit and exact specification. Pack sizes may differ. Freight is entered once per package; the effective tax rate applies to materials and freight.

QUOTE A

Example quote A

Supplier / quote name — A Exact specification and grade — A Unit (such as board, sheet or cubic yard) — A Units per purchasable pack — A Price per pack ($) — A Package freight ($) — A Effective sales tax (%) — A Lead time (days) — A Quote expires — A

QUOTE B

Example quote B

Supplier / quote name — B Exact specification and grade — B Unit (such as board, sheet or cubic yard) — B Units per purchasable pack — B Price per pack ($) — B Package freight ($) — B Effective sales tax (%) — B Lead time (days) — B Quote expires — B

Delivered cost, including the details

I checked that grade, dimensions, treatment, included scope, delivery location and tax assumptions are comparable. This tool does not certify substitutions.

Quote A delivered$4,90111 packs · 1,100 boards

Quote B delivered$4,92222 packs · 1,100 boards

Comparable package differenceVerify scopeConfirm comparable scope above.

Normalized package costs
Component	Quote A	Quote B
Materials, full packs	$4,400	$4,290
Freight	$180	$310
Tax	$321	$322
Delivered total	$4,901	$4,922
Expiry	2026-10-14	2026-10-14

02 / BUY WINDOW

When does an early purchase pay off?

Quote used for timing scenarios

Days until needed on site If waiting, days until order Annual cost of funds (%) Storage per 30 days ($) Damage allowance per 30 days (%) Future material price change (%) Cost per late day ($)

Future price change is your scenario, not a supplier forecast. It changes the material price only. Finance runs from purchase until the later of delivery or planned use; storage and damage start after delivery. Late arrival adds your daily delay cost. Use a consistent cost of funds, whether borrowed money or an equity opportunity cost.

The selected supplier has actually offered a fixed price with a deposit and delivery at the required date. I have checked the expiry and holding terms.

03 / THE DECISION

A threshold you can act on

Buy now · modeled total$5,3850 late days

Wait · modeled total$5,1665.0% material scenario · 0 late days

Lock · modeled totalNo offer enteredTurn on only for real supplier terms.

Buy-now / wait break-even: 9.6% material price change.

At this change in the selected package’s material price, the two total costs are equal under your assumptions. Above it, buying now costs less; below it, waiting costs less. A negative threshold means your timing and delay costs already favor buying now at an unchanged price.

Cost of each timing scenario
Cost	Buy now	Wait	Price lock
Delivered package	$4,901	$5,136	—
Cost of funds	$81	$21	—
On-site storage	$383	$8	—
Damage allowance	$20	$0	—
Site delay	$0	$0	—
Supplier lock / holding fee	—	—	—

This is a simple cash-cost scenario, not an order or a guarantee of future availability. Financing uses actual entered days / 365; monthly allowances use days / 30. Compound interest, resale proceeds, insurance recovery and schedule dependencies are outside this model.

Connect material exposure Open project feasibility

Import JSON

Your project inputs stay in this browser unless you explicitly export or share them. Public source requests do not include your budgets.