I think this is why he's abandoned eBay for actual sales....we convinced him it was unfair, not just in a 'waaah, it's not fair' salty way.
I don't genuinely believe Bots are doing it, I think this is just salty response. I think it's a propagation thing - certain regions get it before elsewhere, and where 20 caps go in <10 seconds, this is unfortunately enough to make it fundamentally unfair.
Single cap sales make sense though cos it's a lot of effort otherwise.
I wouldn't mind more scavenger hunts but they take time to organise....long as everyone's on a level playing field it's fair!