First time here. I'm looking for a web-based billing software for a non hosting business. Basically, I want to be able to build products/services and also to be able to have custom calculated fields in there. Say I have a service called A with a minimum price set and another customer field called Number of Records (I want to have a tiered pricing for this field, from 1 to 100 records is one amount and from 101 to 1000 is a diff amount per record). Then the system would calculate the total based on the minimum and the price based on the records the customer put in. Is that something avail on any software in the market?
I tested the admin demo on ClientExec and WHMCS but couldn't figure out how to accomplish that I wanted.