I am not bidding on the work, which means I have no financial reason to tell you anything but the truth. I read the contracts, walk the site, and translate what the fine print actually commits you to.
When somebody sends me three estimates for the same kitchen and they range across thirty thousand dollars, the low one is almost never a better deal. It is a different scope wearing the same job title. Maybe it excludes electrical. Maybe the allowances for tile and fixtures are set so low that nothing you would actually choose fits inside them. Maybe demolition and disposal are simply not in there.
Homeowners cannot be expected to spot that. There is no reason a person should know that an allowance line is a placeholder, or that plumbing rough-in and finish are separate phases with separate exposure. That is trade knowledge, and it is exactly what most people are missing when they sign.
So I sit on your side of the table. I have no crew waiting for the job and no incentive to talk you into a bigger project. Just an experienced read on what you are about to agree to.

Estimates compared against each other with the gaps, exclusions, and thin allowances written out in plain language.
Payment schedules, change order terms, lien waivers, and warranty language explained before you sign anything.
An in-person look at the actual conditions, including the parts of the house the bids assumed instead of inspected.
A frank split of what you can safely take on yourself and what should stay with a licensed trade, with reasons attached.
Product and material recommendations that match your budget and your climate rather than a supplier relationship.
Eyes on the work at rough-in, waterproofing, and pre-drywall, which are the three moments mistakes get buried.
You do not need me to catch these. Any of them showing up in a proposal is worth a hard conversation before money changes hands.
Plenty of excellent builders are booked out for months and write short proposals. The pattern to watch for is vagueness combined with urgency. That combination almost never ends well.
Attach whatever you have, even if it is a photo of a handwritten estimate. An hour of reading now is cheaper than a change order later.