Some homebrew shops have AHA discounts as well.
Yeah, Northern Brewer is our local homebrew shop and they give a discount, but they also provide the discount for Minnesota Public Radio members, too — and despite my groveling and pleading, they won't combine the discounts.

Speaking of competitions, are there lists anywhere that have competitions that are open to entries nation-wide? I've seen some for various regions (like there's a brew pub in Madison, WI that's having one in a few months), but I'm not sure what competitions would be alright for out-of-state home brewers to enter in.