They were 50-60 when they cost 16.99. Now they're 40 bucks. I used to start at 75 for 40 dollar pairs. 90 for 60 dollar paris Say, around 10-15 for shipping... 15-25 profit per pair. I lowered them if they didn't sell. I sometimes made only 5 bucks a pair, but that was after I couldn't return them. Honestly it was a big hassle going to the shitty post office in Philly. Extra 15 for international. 5 dollars off each pair when buying more than one. But... supply and demand. If no one buys them they'll have to lower the prices. When I first started out I just added 5 bucks a pair after shipping. But that was for one offs to SF friends.