Best deal on memory cards

[HonoluluMom]

I have never bought a memory card since I usually get them as gifts. I've run out and I need to buy some fairly soon and I'm wondering where I can get the best deal - BestBuy, post exchange, WalMart, etc.? FWIW, all my memory cards are SanDisk.

[DebbieJ]

I bought one at WalMart and one on Amazon.