I am lucky to have a Fry's in Austin - they have the Sandisk 2gb card for $69 today after mail-in rebate. That seems pretty reasonable, doesn't it?
Also, online,
newegg seems to have some good pricing.
But, one of the toughest things I have tried to do lately is be the lowest winning bidder on both 1 & 2 gb cards on eBay! Damn that is hard to do.