How do I add funds to my itunes account without a gift card?

A prepaid iTunes card or monetary gift certificate is the only way to add additional credit to the iTunes Store. Otherwise, you'll need a valid credit card.

Regards.

I think this is a stupid move on iTunes part. You'd make a lot more money from people who want to add to their account on the fly rather than having to jump through hoops! Just saying! They need to improve their marketing ways!