Supplier A
1,000 bottles × $4.10 $4,100
Setup $300
Freight $250
Comparable total $4,650
Supplier B
1,000 bottles × $4.35 $4,350
Setup $0
Freight $100
Comparable total $4,450
Illustrative quotes for 1,000 identical bottles, in USD, delivered to the same place. Taxes and duties are excluded from both examples; this is not a complete landed-cost calculation.

Ask suppliers to quote the same requirements.
A price is useful only when you know what it includes. One supplier may quote printed bottles delivered to your warehouse. Another may quote plain bottles collected from its factory. Those are different offers.
Send a short request that fixes the quantity, product specification, artwork, packaging, delivery location and required arrival date. Ask suppliers to list one-off charges and exclusions separately. Keep the quote date and version so a revised offer does not get mixed with an old one.
For repeat purchases, separate the first order from later orders. A setup charge may apply once; a tooling charge may depend on ownership or reuse. Ask rather than assuming it disappears next time.
Check what is missing from each quote.
If freight is missing, write “not quoted” and ask for it. Entering zero makes an incomplete offer look cheaper than it is. Do the same for minimum order quantities, delivery terms and payment timing.
Use one currency and a recorded exchange-rate date for the comparison. If the goods cross borders, establish who pays which transport, duty and clearance costs. Your purchasing or logistics specialist can help make those terms comparable.
The result should be a short cost view plus a list of unresolved questions. Resolve those questions before using the totals to choose a supplier.
Use AI to prepare the comparison.
AI can read differently formatted PDFs and emails and propose a common set of fields: item, quantity, unit price, setup, freight and promised date. This is called extraction: copying information from a document into a consistent set of fields.
Keep a link from each proposed value to its source. Use ordinary calculations for the totals, and flag missing or ambiguous fields for review. The buyer still checks that “bottle” means the same specification and that the delivery promise is usable.
Start with a small set of past quotes whose correct comparison is already known. Measure the time to a checked comparison, including corrections. Include review time when deciding whether the tool saves work.
Record why you chose the supplier.
The lowest comparable cost may still be the wrong choice if it misses a launch or cannot meet the quality requirement. Alongside the costs, record whether the supplier can meet the specification and arrival date. Note any conditions you still need to agree.
Try this on your next quote round: use one request, one comparison and one visible list of unknowns. Track comparison time and extra charges discovered before commitment. The $200 above is an example of a cost difference, not a promised saving.
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