I make my own incubators out of old stand up freezers or mini bar fridges. I get them at the dumb for a small fee of $40. The I line the back, bottom and top with 12" heat tape. Get a small incubator fan, bought from www.beanfarm.com or any store near you the sells DIY snake racks, heat tape and things like that. Stick it to the top. Get a thermostat and done. Should not cost you more then $100 at most.