I'd do a search . . .if your gold card memeber at GNC and buy the first part of the month, it might not be so bad, Remember that all you need is a basic creatine monohydrate . . the cheaper in price the better.
I buy everything off the net and have had good luck so far with
www.dpsnutrition.com
Do a search on this board and you'll come up with LOTS of internet sites to buy supplements from. Remember you have to add shipping into the mix and sometimes the prices are about the same as GNC. bodybuilding.com also good but prices are a little high for my atste and have gotten some low quality stuff.
Cheers