Why is it so hard to buy parts from people

Buying: I ask IF the guy has ever restored a car. If so, he should be able to give me a GOOD description. Pictures are basically worthless.
If he knows what his parts are/for and the real condition.
Selling: If someone wants to buy one of my cars, ALL me and I will give all the details in the world and they can bank on it. No body is buying basically. Thanks Branden.
Parts: IF I think I might EVER need it, don't sell it. CL is dead here and FB Marketplace wants to charge me for their crap and their search is a JOKE!!!

FB Marketplace charges you? for what?