Make it difficult? $100 is difficult for an interested user? Really? 20 lattes? If you make something well and it's non-trivial, the chances of it getting refu

Make it difficult? $100 is difficult for an interested user? Really? 20 lattes? If you make something well and it's non-trivial, the chances of it getting refused for any substantive reason (porn, stepping on Apple's toes, etc.) are actually pretty small. I.e., there's small set of things you can't do, but an unlimited set of things you can do.