Found 2 биржи where XBT is traded for USDT. According to the data on 31 October the most optimal price to exchange XBT for USDT is ₮0 for 1 XBT. This rate is fixed at LBank at the maximum trading volume of the pair XBT/USDT - 167.1 ths. USDT.
	
		Selling and buying XBT (XBT) for Tether
		To buy XBT, use the table above.
The maximum daily trading volume is observed in the XBT/USDT trading pair at LBank and reaches ₮ 167,107.54 (0.0033% of the exchange's total trading volumes) at the price ₮ 0 per 1 XBT.
- The minimum price to buy XBT for USDT is 0 - on the exchange KCEX.
- The maximum price to buy XBT/USDT is 0 - on the exchange LBank.