I've been on "feebay" for 3.5 years and whenever there was a problem with a buyer, "feebay" has always solved it.
Example, sold a BU 1967 Canadian Half, buyer said they never got it, tracking showed it was delivered, buyer bitched about "you sellers always pack coins in small envelopes, you suck", left negative feedback when offered a full refund, coin was found a few days later, called "feebay", they had records of the emails and tracking info, they corrected my negative feedback, and I politely told buyer to never buy my crap again. Little bit of "leg work" on my part, but issue was taken care of ASAP by "feebay".
You pay the +/-12% fee for worldwide exposure. YMMV, but I like selling on "feebay".
ETA: I had someone who was local buy some stupid Council Bluffs Black Squirrel Coins from me. Hesitantly, I met up with the person to deliver the coins. He was a middle aged coin/currency collector who was interested in one of my currency auctions. Sold him some currency w/o any fees and ended up finding a 1953 $10 and $5 for his brother that was born in 1953, whose birthday was coming up. Nice dude.