Found 3 exchanges where Derive is traded for USDT. According to the data on 28 August the most optimal price to exchange DRV for USDT is ₮0.174 for 1 Derive. This rate is fixed at OrangeX at the maximum trading volume of the pair DRV/USDT - 2 mln. USDT.
The maximum daily trading volume is observed in the DRV/KRW trading pair at Upbit and reaches ₮ 8 488 707.25 (0.876% of the exchange's total trading volumes) at the price ₮ 0.156 per 1 DRV.
The minimum price to buy DRV for USDT is 0.168 - on the exchange WEEX.
The maximum price to buy DRV/USDT is 0.174 - on the exchange BitVenus.
Warning: some DRV markets show an abnormally wide spread — those quotes may be unreliable (thin liquidity or off-market trades). Cross-check the volume against several venues.