O que é essa coisa?

I would be skeptical of that.

No what is the cost/reward estimate?

Get a machine from Nick @Kaboomracks Great guy and company. Used them twice before and couldn’t be happier with the service.

You can get an s9 from kaboomracks with braiins firmware flashed and trusted reseller for way cheaper. Ive heard bad things abt buying miners from amazon.

Does it include the PSU?

Good luck getting your 0.007+ #bitcoin back

Holy shit that’s cheap! Isn’t that like the most efficient miner on the market? Or am I confusing it with another?

I bet you can get it cheaper on one of these shops: https://Bitcoin-Overview.vercel.app/pages/Shops.html#4