Bid is for fixing Paypal transaction amount only.
Problem should be an easy fix, most likely a day or two to track down the bug depending on what the code looks like currently. Separately, I can do the custom Quickbooks integration also. I can prepare you a quote for that and the enhanced content management (for controlling your homepage specials) once I've looked at your existing code. I would suggest completing your urgent project (fixing the paypal charges) first.
Over 9 years honest and legitimate experience with dynamic web programming, I specialize in PHP/MySQL driven web/application development. Resume available if interested.