Found 2 биржи where OpenServ is traded for ETH. According to the data on 1 November 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 - 17.5 ETH.
The maximum daily trading volume is observed in the SERV/USDT trading pair at MXC and reaches Ξ 45.19 (14.26% of the exchange's total trading volumes) at the price Ξ 0 per 1 SERV.