I'd prefer it to not be styrofoam, but since that's all I've seen, I could possibly give them a try. I'm thinking of a price up to $50 or so, and I'd love a turner/fan kit, but all I've seen on eBay was like used Hovabator and Little Giants with them. Anybody have any personal experience with these models? Would you advise against buying used? Even if they say it's only been used one to two times?