They're not even that expensive anymore, you can find pretty reasonably priced ones: https://www.amazon.com/dp/B0D66X8B5B/ref=sspa_dk_detail_2?pd_rd_i=B0D66X8B5

They're not even that expensive anymore, you can find pretty reasonably priced ones: https://www.amazon.com/dp/B0D66X8B5B/ref=sspa_dk_detail_2?pd_rd_i=B0D66X8B5B&pd_rd_w=jwWby&content-id=amzn1.sym.386c274b-4bfe-4421-9052-a1a56db557ab&pf_rd_p=386c274b-4bfe-4421-9052-a1a56db557ab&pf_rd_r=GH6DV8AF7DCCKK1JWXW0&pd_rd_wg=ME9sK&pd_rd_r=68b461c7-1748-490f-82ad-d6f9e6509740&sp_csd=d2lkZ2V0TmFtZT1zcF9kZXRhaWxfdGhlbWF0aWM&th=1 https://www.amazon.com/dp/B0D66X8B5B/ref=sspa_dk_detail_2?pd... I have the ooni one that i use for my baking and to measure yeast and it was one of the best investments i made.