I'm dabbling with the idea of jumping into the deep end and starting a small paysite. Still not sure if it's the road I will take but I have some cash available and thought it might be a good investment - even if I end up breaking even on the first attempt I will be happy so long as lessons are learned - so my hopes are not that high (so please no one shouting don't do it don't do it

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I think I have most of the elements required to start something small so my only other major cost would be processing. I will more than likely go with ccbill (and possible another).
I know that I have to pay $750 for visa processing with ccbill. My question is does this fee cover just one domain or can I use my account for other sites if and when I create them?