What is the minimum price apps sell for on iTunes?

[jimmy2112]

Obviously free, but the minimum price higher than £0.00. I have 33p in my iTunes acount, and I can't find any apps for that price. Is there a minimum price? Or is there anywhere where it lists apps according to the price, so you can see what you can buy for how much money you have? Or am I just screwed and that 33p will never be spent unless I use it in addition to a credit card payment?
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