Found 2 биржи where OpenServ is traded for ETH. According to the data on 1 February the most optimal price to exchange SERV for ETH is Ξ0 for 1 OpenServ. This rate is fixed at Bilaxy at the maximum trading volume of the pair SERV/ETH - 18.2 ETH.
The maximum daily trading volume is observed in the SERV/USDT trading pair at XT and reaches Ξ 358.27 (45.53% of the exchange's total trading volumes) at the price Ξ 0 per 1 SERV.