[taeric]

If you aren't sending real orders through your systems.. you are waiting for your customers to find and report all problems. Right?

This is actually a strength of a QA team. They can build test plans and execute them on a different technology than your Dev team built the system with and on. This is also why acceptance testing is so important. You want to get as close to possible as capturing "in the wild" users using your system as you can.