The only pair of Darn Tough socks I've had trouble with, I bought on Amazon. I'd bought others on there, and they were fine, but these looked and felt odd and developed holes in strange places after like five wears. That'd have been poor performance for a $2 pair of cotton socks, let alone a $20ish pair of supposedly tough-wearing socks. Normally, Darn Tough wear well for so long that the high prices aren't actually high on a per-wear basis, but these? Yeah, I stopped buying stuff on Amazon in general after that (I still buy Darn Tough, but straight from their site)