What the…?!?
my first thought is how did you find that? second, maybe he is catering to the foot wierdos out there? judging by the private buyer settings, i would have to think so. now i know what i can do with my old clothes, i wonder how much my dirty used gym undies would fetch me?
Sell your dirty underwear to Japan. I hear they’re going like hotcakes there!
what the?!
About a year ago I was looking for some shoes on eBay and had the same experience: Guys selling well-worn shoes. And it was always guys.
I found it so strange I kept clicking on different auctions until I saw this in the description of one of them:
GAY INTEREST
After that, I simply added “-gay -used” to my search query, and that was the end of that! 
But hey, if anyone can explain it to me, I’m all ears.