I often like to search for items based on the lowest price first. Unfortunately though I often have to go through pages of "demos" before I can see actually items for sale to buy. A demo is a handy thing, but if I'm searching for the lowest price I do not want a demo, I want the full item. I would suggest adding a sub category for demos. That way those who want the demos can easily find them, and those looking to buy an item straight out do not have to wade through them.