Yeah, I can go with that. Even if its just cards that carry so much monetary value where a code is inputted into PSN and you get the credit. Perfect for kids in all honesty. How many times have you heard about kids overspending on a card that belongs to a parent (Facebook & Live, 2 recent stories about kids overspending). If you could just buy the credit on a disposable card it makes things much better for parents.
No need for this, Sony. We can all buy DLC's from PSN.
If you are a kid, you should be asking parent's permission in the first place to BUY anything.