Read the exclusions before you read the number
The cheapest quote on the table is frequently the one that excluded the most. The fix is to price the exclusions as scope, because that is what they are.
Every estimator knows to read the exclusions. Every estimator also knows what it is like to receive nine quotes in the last hour before close, and the two facts do not coexist comfortably.
Startup labor excluded. One-year warranty offered against a two-year requirement.
Neither line changes the quoted number. Both change what the job costs. Startup labor does not stop being required because a vendor declined to price it, and a warranty a year short of the specification is a cost that lands on you at a moment when you have no leverage left.
An exclusion is a price with the sign flipped
The useful mental move is to stop treating exclusions as terms and start treating them as line items. Every exclusion is scope that somebody is going to perform and somebody is going to pay for. Leaving it off a quote does not delete it from the job; it just moves it to whoever failed to notice.
Once exclusions are line items, the comparison changes shape. The quote that looked cheapest is often the one carrying the most unpriced scope, and the one that looked expensive turns out to have included startup, freight, and the correct warranty term all along.
Leaving scope off a quote does not delete it from the job. It moves it to whoever failed to notice.
What ArosBid does with it
Leveling pulls exclusions out of the fine print and normalizes every package to the same scope lines. Where a vendor excluded something the specification requires, the gap is surfaced with the requirement beside it and an estimated value attached, so the comparison you are looking at is a comparison of the same job.
The estimated value is a starting point for a conversation with the vendor, not a substitute for one. The point is that the conversation happens on a Tuesday rather than twenty minutes before close.
And it stays in the proposal
The same discipline runs forward into your own proposal. Scope, clarifications, and exclusions get assembled from the decisions actually recorded during the pursuit, so what you send out states plainly what you are carrying — which is the courtesy you wanted from your vendors in the first place.