We have an offers calculation system on our web site which was developed for us. They're changing the values displayed on the web site, then modifying the sales order on creation with an aftersubmit script. It adds huge delays in the order submit/create phase and hits governance above 75 lines or so. We'll replace it with Suitepromotions eventually, but can't do so easily as we have 4 web sites using the same back-end system.