hmm... tricky situation... 1st of all get a contract. In the contract I would think it is wise to put that you have to be informed about the number of sales being made on a regular basis. Even if only one sale is made, you have to know. This so you can keep track on if you're being ripped off or not. You can also try and make an agreement on the minimum amount of fees you want to have before cash-out,so you won't get a cheque of $0.50 for every sale or such. So you can say like, you would like your fees to be payed out at the end of the month, provided the total amount is more then say... $20 or something. If the fee is less then $20 the money will move through to the next month. If at any time you think the person is not paying you, you can try and buy a copy of the book yourself. Maybe buy it under a different name as the name under your contract. Then wait and see if you get news that someone bought the book and you have a fee comming in. If you don't get any news, confront the people who are selling the book and ask them to please keep you completely up to date on any sales made. If they really refuse to give you the money due, you can threaten with legal action, and if that doesn't work either, you can consider actually taking legal action if neccesary. That's what I can come up with for now :)

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