85$ is exactly what I’m looking for if they work! Why couldn’t I find him on google, seems to good to be true.
If you read the posted link above it was posted 2 years ago so it means there is a possibility that miner are sold out and that time the price of Bitcoin is around $9k compared on the price today so it possible the prices are changed.
However try to contact him and maybe he can able to give you some other source with cheaper price than $439 you can maybe get them for around $150 or around $200