As a hobbyist: I really am. Looking up the price for each component takes a lot of time, which I would much rather spend working on my hw/code projects.
Simple rule of FAQs: if you don't know, say you don't know, and stop. Don't then go on to tease about how people could look up the component costs if they really want to, because are you also going to let them guess as your production overhead and the profit margin? No. Just say "we don't know". Or, at this point, after limited runs, give a real indication.
I guess that's an old habit from maintaining open-source projects, fully disclosed & all transparent policy sometimes make things overly complicated. My apologies for the bad writing ;-)
This is an open source product, and not consumer-grade in the least, so I imagine hobbyists wouldn't be opposed to doing that legwork.