We hired 2 junior developers for maybe 20K more total, in total compensation, than their original quote.

But you (and child) comment made me realize that I don't remember the terms of the proposal, whether it was per year or for 2 years. So it might have been a 1:1, not 1:2.

In the end, their product was just completely insufficient for our needs, and it was clearly just gluing open source tools together. The part we couldn't do as well was the front end, and they clearly put a lot of effort into it. It looked and worked nicely. But that didn't help us when they couldn't parse the code to populate it.

It was 100USD per month per seat some time ago, with a high number of devs it may actually be beneficial to roll something on your own.

If it's true, I'd love to hear how many devs their marketing people say you'd have to hire to replace the functionality.