Found 2 биржи where OpenServ is traded for ETH. According to the data on 28 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 - 16.9 ETH.
The maximum daily trading volume is observed in the SERV/ETH trading pair at Bilaxy and reaches Ξ 16.9 (274.4% of the exchange's total trading volumes) at the price Ξ 0 per 1 SERV.