Bitmain Antminer S19j Pro 104TH 30 days warranty!
picture for reference only, you will get similar s19j Pro 104T miner

I could recommend Good Bitcoin Mining Pool with low fees 1.2-2% depends of hashrate:

1-3PH - 2% fee

4-20PH - 1.5% fee

Over 20PH  - 1.2% fee