The ceramic industry is in a decline. It is a labor intensive industry and is shrinking. Programmable kilns are the cat's meow now so non automated kilns are pretty easy to find pretty cheap. Craigslist always has a few.

It is worth checking the inside coils to make sure they all work before you buy...or check the price of the coils or that brand. Some are cheap, some not as cheap. If you know you need to replace a coil at least you can factor it in during purchase.