Found 2 биржи where HEX is traded for USDT. According to the data on 25 August the most optimal price to exchange HEX for USDT is ₮0 for 1 HEX. This rate is fixed at Uniswap (v2) at the maximum trading volume of the pair HEX/USDT - 167.5 USDT.
The maximum daily trading volume is observed in the HEX/WETH trading pair at Uniswap (v2) and reaches ₮ 84,137.37 (0.125% of the exchange's total trading volumes) at the price ₮ 0 per 1 HEX.
The minimum price to buy HEX for USDT is 0 - on the exchange Uniswap (v2).