Michael,
I was unable to post over in "classifieds" so......
I have a PerformaX 22-44 and I have purchased feed belts from here, http://www.industrialabrasives.com/
They were $17 and change when I purchased them. A far cry from the OEM price.
Give Sandy(she owns the place) a call and you will find them very easy to work with. If fact, I purchase all of my sanding needs there now.
Jim