I spent a number of years working on a similar product, a B2B base platform that was heavily customized for the larger customers. The packages would typically s

I spent a number of years working on a similar product, a B2B base platform that was heavily customized for the larger customers. The packages would typically sell for high six / low seven figures. One customer wanted a module that wasn't just custom but wholly new, and the whole deal depended on it, so a dev was put on it for about 4 weeks and given a bonus to get it done fast. I never got the exact number, but he told me it was going to be enough to "add that garage on to the house".