I have some "credits" still, but I'm not sure how many I need for a snipe that I just entered to actually work. What is the relationship between "credits" and how many snipes I get for the remaining credits?

Hello,
We changed our billing about 2 years ago. The old method was 1% per transaction but we changed it to a better system. The new system can be seen by clicking on the Add Service link at the top.