I bought this on Amazon and love it. I put a couple of hand towels on it to trap the heat a little more (to save a little energy is all). I ran it with no lid once at 195F and it maintained temp just fine too.
Not sure how cheap you mean - but this was $37
www.amazon.com/gp/product/B07X8ZPZWP/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&th=1
Not sure how cheap you mean - but this was $37
www.amazon.com/gp/product/B07X8ZPZWP/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&th=1