You know how you can give someone an iTunes gift card to add credit to their account? Well is that valid when buying iBooks, or would your credit card be charged for iBooks?
Since you're using the separate iBookstore, it's a bit confusing.
iMac8,1 2.66 GHz Intel Core 2 Duo 4 GB 800 MHz DDR2 SDRAM,
Mac OS X (10.6.4),
MacBookPro3,1 2.2 GHz Intel Core 2 Duo 4 GB 667 MHz DDR2 SDRAM
I don't want to give a book as a gift, I want to know if I can use the credit from a gift card to buy one for myself! Right now it says I have $70 worth of credit in iTunes, before I buy a book I want to know if my credit card will be charged or if it will use some of that $70 worth of credit I got from gift cards.
So no one knows? I just want to know before I buy a book. It would not be good if I bought a book thinking I could use my credit, only to find it they charged my card. That's why I'm asking in advance before I make a purchase.
I have not done it myself to confirm, but the iTunes Store terms of service say that gift card credit can be used in the iBookstore:
"If the balance from an iTunes Card, iTunes Store Gift Certificate or Allowance Account is used for an iBookstore transaction, the amount is deducted from your Account or your iTunes Card (as the case may be) at the time of purchase. If the total amount of the transaction is greater than the balance available in your iTunes Card, Gift Certificate or Allowance Account, your credit card, or PayPal account, will be charged for the balance."