Found 1 exchange where BitMEX is traded for USDT. According to the data on 27 September the most optimal price to exchange BMEX for USDT is ₮0.00019 for 1 BitMEX. This rate is fixed at Bitmex Spot at the maximum trading volume of the pair BMEX/USDT - 34.1 USDT.
Warning: some BMEX markets show an abnormally wide spread — those quotes may be unreliable (thin liquidity or off-market trades). Cross-check the volume against several venues.