Not too many people selling ceramic kamado type grills cheap. This is a kind of knock-off idea made out of some kind of heat resistant material to bring the concept at a lot lower price. Not saying it doesn’t work. If you have interest in a ceramic version of something like this your best hope is to find a used one from someone besides Green Egg and probably Primo. They are the top brands and hold their value well.
I was fortunate enough to have my old boss give me a Green Egg. It IS an amazing charcoal grill and is really hard to beat for doing pork shoulders. But for the large outlay you get a rather small amount of grilling space.