I believe this is a homemade incubator with Gqf parts. I have a really old GQf and it has the trays that turn, but you have to turn a crank on top of the bator to turn the trays. I'ts the only one I have ever seen like it. Anyway, I believe if this were factory made it would have some way to turn the trays. Also the Electronic thermostate is in the wrong place for a factory made one, it should be up on top with the humidity pans. If you can get it right I see no reason why it should not work just fine. I would plug it up and make sure it keeps a constant temp. Those electronic thermostates will go bad and the temp will vary, they will vary enough to keep your eggs from hatching well. If it is bad remember the new ones are around $70. bucks, so I would consider that when offering a price. If it keeps a constant temp then you are good to go!