We've all bought hats and lost / made money. I'd be happy if it was after a reset. I think it would make the game better to have the hat you always want. It isn't top priority or anything so after reset would be good.
All era hats say "era_" and i'm sure they can edit the script so it allows only the global hats and Era hats, not any other "server-specific" hats such as zhats for zodiac.
Most heads / bodies say "era_" or "zhead" so you should know it's from era or zodiac.