Why are you lying? That price is to replace the main board.
Give us the price of the Framework's mainboard if you want to compare that.
They aren't lying. Apple's OEM keyboard repair will charge you for the entire topcase assembly, which can easily crest $500.
Contrast this with Framework or Thinkpad where a keyboard replacement is $20 and 5 minutes of screw work: https://www.ebay.com/itm/286053777254