Bitcoin Miner – Antminer S9i 13.5TH/s. Its in working condition, but it hasnt been used awhile now. The item “Bitcoin Miner Antminer S9 13.5TH/s” is in sale since Sunday, February 14, 2021. This item is in the category “Coins & Paper Money\Stocks & Bonds, Scripophily\Mining”. The seller is “gaboduda-0″ and is located in Duncan BC. This item can be shipped worldwide.