Thanks for the help. My problem is that I don't really know PHP (I am working on learning it) and how to properly format the calcs. In your example I understand most of it but I don't understand what this is doing:
I would like to do this on a particular item and have a similar calc that I am trying to do where items are .75 each but sold 3 for $2. So if someone buys 4 the should be $2.75...I assume I would do something similar for this as well?