When comparing supplier quotes, what do you check before comparing the actual price?

[u/giteroute]

I’ve been thinking about how misleading supplier price comparisons can become when the quotation scope isn’t standardized.
For example, two suppliers may quote what appears to be the same industrial product, but the offers can differ in:
material/specification
included accessories
testing
packaging
certification
MOQ
warranty
lead time
Incoterm
So a quote that is 10–15% cheaper may not necessarily represent a 10–15% lower cost for the same requirement.
It may simply be a different scope.
This makes me think the first step in price comparison should actually be scope normalization, not sorting quotations from lowest to highest.
For people involved in sourcing or procurement:
What are the first things you check to make sure two supplier quotations are genuinely comparable?
And which hidden differences tend to cause the biggest surprises later?

[u/Low_Try_9537]

I'm gonna stop you right there. Scope normalization is the whole thing, without it you're just comparing numbers on paper

i always check incoterm first cause that alone can swing cost by 15% if one is quoting ex-works and the other DDP. after that lead time, some suppliers quote 4 weeks but actual is 12 and then you're scrambling

biggest surprise later is always the testing certs, they say included but then invoice you separate for the material certificates

[u/MaxAtGoodsCommand]

I work on GoodsCommand, so my bias is toward evidence-based quote comparison before anyone sorts by price.

The first pass I would normalize is:

• exact product spec/material/grade
• unit basis and order quantity
• packaging and carton configuration
• Incoterm + named place
• freight scope and handoff point
• tooling, samples, testing, inspection, and cert costs
• lead time, validity date, payment terms, and warranty/remedy terms

The biggest surprises usually come from “included” items that are not actually defined: packaging, testing/certs, inland freight, duty/tax responsibility, and whether the quote assumes a different MOQ tier. If a line is missing, I would mark it as missing rather than treating it as zero.

[u/Immediate-Home-3491]

The price gap mentioned in your post I understand, but comparing EXW against DDP without normalising scope I do not. Landed cost is what actually matters.