I avoid eBay and use Craigslist for selling stuff because I don't want to risk a PayPal nightmare (due to scams which I always hear about). I'd rather have cash in my hand that I can verify is not counterfeit.
There's a huge cost to doing business on Craigslist, to wit, you have to deal with people who do business on Craigslist. (there's good, but dang there's a whole lot of flakes and wackos on CL)