Now my question is, why would the government accept such a low bid, when it's clear that the project will cost a million dollars more than estimated? Is it because the government functionary at the starting end of the transaction can take immediate credit for saving money, since he won't be around when his replacement two years down the road has to disburse more money? Or is the government legally required to take the low bid, if that bid meets all the minimal requirements for credibility?
The second one. If eight raccoons in a trench coat pinky-swear they can do the work as described, we're legally obligated to pretend that we believe that. We have less of the former, because our turnover isn't that high, and most of the people on a job at the beginning will be on it at the end. This one is a short timeline, so it's even less applicable.
There is actually a process to disqualify a bid that's not "responsible" but I've never gotten a straight answer as to what exactly that is. I've heard it gets easier if the bid is less than 75% of the estimate, but I'm not sure that's a hard line. Despite my hyperbole in the previous paragraph, I think that if they, say, just straight up didn't have a required certification that can be a reason to disregard (for example, we say something has to be welded by somebody qualified by the American Welding Society to AWS D1.5 standards, and they don't have anybody certified). However, I think these have to be
very objective, to avoid looking like we're steering work to a buddy. Technically, the job hasn't been awarded yet. The opaque contracting black box has yet to formally award the contract--this really is only the "apparent low bidder" at this point.
To be fair, this is me bitching. The winning bid is by a company that has done great work on jobs I've worked with them before, so maybe they've seen some efficiencies that we didn't account for. However, they were very close, but below another company that is Known Incompetent. (The KI company, on a previous job, told our QA rep, "[OurGuy], I told you before, I didn't read the contract before I signed it!" as an excuse for why they weren't doing something required.)
There are other processes to select a non-low bidder, but we Absolutely Had to Have This Awarded By the End of the Fiscal Year, because the money turns into a pumpkin on the first of October, and this project absolutely cannot slip--it's tied to a bunch of planned work by others.
Also, the other source selection methods have their own problems besides taking longer. We can make them give us a proposal and rate that, balancing the cost against the quality apparent from that proposal. However, you can still get bidders that write a great proposal but suck at the work. You also still have the "we have to have objective criteria" problem. For example, on a job I was working on some years back, we had bidders give us proposals (called Best Value Trade Off--BVTO--compared to just going with the lowest bidder, called Invitation for Bid, or IFB). As part of BVTO, you have to give bidders a Source Selection Plan (SSP). This was for a job of about $1mm, and as part of it their overall proposal the SSP said to provide abstracts for three previous jobs that were similar and at least $400,000.
One bidder, that we had worked with in the past and that we knew could do the work, and had the lowest cost of the four we were evaluating, gave us two projects of over that amount and one project that was about $350,000. Our lawyer told us that we had to disqualify them. When we said they could do the work based on our own knowledge,
and their bid was quite a bit lower, the conversation went like this: "How many jobs did you ask for?" "Three." "And how much do those jobs have to be worth?" "At least $400,000." "And how many jobs above that value did they give you?" "Two" "There you go. They're disqualified."
The process is designed to appear to be fair, not to produce the people best able to perform the work. Even though we realized in hindsight that our criteria could be relaxed, we weren't allowed to do that. We can't change the "grading rubric" after the fact. This means that we could spend a lot of time and money on the selection process--and requiring a lot of money from the bidders, as a good rule of thumb is that each BVTO proposal takes a bidder $20,000 to generate--and still get a dud. There's been a push to swing back to lowest bidder because of that.