Thanks guys. I have the amazon visa credit card, I don't have the store card. The 5% back is tempting, but not sure if I want yet another card to apply to. I guess its kind of like a credit card, just you can't use it anywhere but amazon.
eta: Well, I have the Prime store card now and $50 of gift cards in my account.
Took like seconds to be approved. I'll use it instead of the Amazon visa on stuff from Amazon for 5% instead of 3% and still use the other one for getting GC's for the stuff that isn't sold by Amazon and so on. Always pay off bills each month and its all good to do.
That brings subscribe and save stuff down to 20% off if I understand this right. Only of course if there is no GC balance on the account. I hate that I can't change payment away from GC for subscribe and save stuff and use a card on file instead. Since I always have a GC balance, this won't work that way for subscribe stuff then.