PTFE Gasket Source

https://moonshine-still.co/products/10-ptfe-tri-clamp-gasket?gclid=CjwKCAjw2NvLBRAjEiwAF98GMbyIgjFpCTidWFAIUGZxo2uObU6ZDQ50VEV3bw79JBp55bnp8whZERoC5rEQAvD_BwE

Anyone have some input on these gaskets? I found this link and thought they were fairly cheap considering most companies charge upwards of $50.00 per 10" ptfe gasket. Do you think it's too good to be true? Maybe they have defects?

I myself havent...If u do purchase it let me know how well they hold up. Thanks!