Way too small for BP eggs and way over-priced for what it is, not too mention that when it comes to eggs you should really trust them to a reliable thermostat.
You can build a incubator yourself for about $130/$150 the single most important piece of equipment being the thermostat.
If you want to buy a manufactured incubator than look in C-Serpents or Nature Spirits.
I haven't tried them so I can't recommend them personally but I've heard a lot of people say good things about the incubators that C Serpents manufactures as well. I'm going to purchase one in 2018 and give it a try.