What seems very obvious to me or maybe I didn't get the point: Carrying a key chain with a condom is more than just a key chain, it's a statement. It somehow says in a very obtrusive way that you want to f$%#, that you are anytime ready to f$%#, yeah it just says that you are so desperate and unf$%#$% that any f$%# is welcome. And that's definitely not the way to get laid (for men at least).
Sorry, but who should buy this? 12yr old kids?
However, I think that the OP learned a lot, so it should have been a good entrepreneurial experience in any case.