That's the great thing about auditions - they make you focussed and hungry to play well, but never forget that you're auditioning them as well. It's not just about the music either - try to imagine yourself huddled in the back of a transit van at 3am when you're all knackered, starving, stone cold sober and cranky.
If they seem like the sort of people you're prepared to endure those sorts of situations with, then it might be worth sticking around for. If not, then keep looking; thousands upon thousands of musical instruments are sold every year - the people buying them can't [i]all[/i] be twats now, can they?