some of you people are hilarious.
I'd venture to say a large percentage of people don't have more than 4,000 in their checking account. That being said, a $30 piece of software if you have 4,000 isn't an outrageous expense by any means.
Guy clearly deserves his money back and in a timely manner. Those who think he deserves to lose it, do you think there is high enough probability that if you purchase a 30 dollar item you may get charged 122 times for it? By that logic, i'd venture to say none of us should take the chance to purchase any items and our economy will come to a screeching holt. As a consumer you can reasonably expect to be charged the price for the item.
The money is gone, so someone has it, either pay pal or apple. And yes he should be paid interest. If I didn't have that money within 48 hours I'd be consulting an attorney