Parts Prices, WTF?!

Personally I don't sell on the Forum because it's just far too much trouble... I have a lot of respect for the people who do because all the packing and dealing with people and the money back and forth, what a pain!...
I do sell locally and just within the last couple months sold a set of 72 truck doors... Had them for over a year and put them on and off Craigslist with no buyers... Posted them again a couple months ago as a last ditch effort before they went to scrap... A guy tried to lowball me from $200 down to $100 and for that price for a good set of doors I was more than willing to scrap them I said no... Then a couple weeks later he text me saying if he was to give me $150 he wanted to know all about them and I told him no...$200.. he finally came and got them and met me at the store and was all pissy and throwing the money at me acting like a real big baby... 2 weeks later I bought a 74 truck and now I'm looking for doors and would gladly give him 300 bucks for them back...lol...
Sold a set of 273 rockers with banana grooves locking adjusters all notched for bigger Springs for $175... Just bought an old crappy set for 100 with no banana grooves and in need of adjusters...
Moral of the story is half the time I sell stuff I end up needing it back and can't get it at the price I sell it for even when people complain about the price...