The same way almost all sales of BCC happened: customer wants to play X bingo with users, customer Googles [X bingo cards], customer finds BCC web site, customer pays via credit card. The only reason I'm even consciously aware of this customer is that they really wanted a custom feature built and, because of who they were and what they were doing, I made it happen. (At the risk of stating the obvious, normally $29.95 does not entitle you to getting custom programming done on your behalf.)