Ive had good luck with these not sure if cheaper than saintyco but they also have a similar demolder. Just make sure you get the measurements of demolder before order molds so they match.
Everything comes from China these days, buy 100 u can have it own logo on it :), I bought a packing machine from baba and it was badass, but … the issue is when something breaks and them making good on warranty, I had a -80 chiller that was under warranty but didn’t make good on the 2 grand service, but I do have a credit for next purchase on new chiller,