>Thanks Gerry for your response. I guess I have used wrong words. I have a small app for a retail store already made, but this company want so many such copies (meeting on Wednesday) and a main copy for their H.O. Internet won't play much of a roll just emailing zips at the end of the day.

In your case, when I was referring to "transactions", I was referring to "POS transactions". It's based on the concept of: Pay as you go.

Big customers pay more for the same software than smaller customers.