Yeah that modern Capri parts site is insanely overpriced. I have to wonder if anyone has literally ever bought anything from there. I have a list of parts I need to find, that seem out of existence, that I've found only on that site. But for what that place wants, I'd rather pay someone to fabricate new ones. It'd honestly be cheaper.
Anways, good luck selling your Capri. If you were closer to me, I'd definitely come check it out, and I could probably be talked into buying it. One option you've got is to pull the engine, and try selling it to the 323 guys, Festiva guys, or hell even the Miata guys. With such low miles, you'd get more for the engine alone than you would for the whole (non-running) car. If you can get it to run and drive, you should be able to get somewhere around $500-$1000 on Craigslist or similar. These cars, unfortunately, aren't worth much.