This is cool! Shameless plug, I started bomquote.com 15+ years ago with the thesis "everything is a BOM". We provide design firms & hardware teams design-to-MFG services including line item quotes for their entire BOM. Hard to believe I haven't come across this site by now.

Very cool idea! I'm no longer in firmware but my previous employers could have used this at the time - it was all speadsheets and phonecalls at the time