Whenever I saw one of those large sales come through from a sponsor e.g. 3 month or 6 month I would always question whether it was a bonus sale from the sponsor for encouragement purposes, I never had a way of proving it. Now that CCBill has FlexStats, I get the map up to see if the sale has come from the same country as where the sponsor is based, what I've found is that the majority of the time these sales are coming from a different country so is most likely a real customer.
I'm glad to know this, as a real sale is better than a bonus sale, though bonus sales are still well appreciated
