What are you buying...I do the same thing over on 247 and make more money selling parts on there then I do at my job...I think a lot of it is buying for rarity...you can get JDM parts, but without there already being a desire and want for them, nobody is going to want them...it is all about selling things you know for sure people are looking for...when people put up big partouts, I have offered to buy it all at huge discounts, just to sell it a few weeks later for more...sometimes people just don't want to deal with it though...idk about the selling stuff from yardsales idea lol.
i kinda have the same mentality. i buy used car parts, especially jdm parts thinking i can turn around and profit on them. i just end up with what looks like a damn junk yard in my back yard and never sell s**t. its all about to go to the dump. kinda sad to see all these super sought after parts go to the dump, but nobody is buying s**t anymore and it sucks.
definitely makes it hard to get extra cash lol