I guess I'm the only one here that read your post and took your attitude as a by-product of the prices you were quoted instead of as the attitude with which you approached the situation...
I'd say 30 bucks is a little low, but you certainly shouldn't be paying more than 45 without any inserts, slugs, ITs, etc. However, I also wouldn't expect any real discount from their standard drilling prices for not having a thumbhole. Maaaaaybe 5 bucks, but that's about it.
Sorry you're having a hard time finding a driller. You are correct, the prices you were quoted were ridiculous. If that's left a bad taste in your mouth over the situation, I understand. If, however, you approached getting your ball drilled by telling the drillers what you would pay regardless of their prices, then I would suggest you totally deserved it...but I'm willing to assume the best, because I wasn't there. Either way, good luck.