I dont know if this is usefull or not, because i dont have paypal and cant test it. Anyway if you go to the donation site on wowgasm, you can change the cost of any donor item by simply editing the source. To do so change the value of the variable "amount" and click the donate button. Then you will end up here(apperantly it doesnt work with amount=0):
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=>profit?
[Only registered and activated users can see links. Click Here To Register...]
=>profit?
