Found 2 биржи where OpenServ is traded for ETH. According to the data on 19 December 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 - 18.3 ETH.
The maximum daily trading volume is observed in the SERV/WETH trading pair at Uniswap (v3) and reaches Ξ 45.83 (56.92% of the exchange's total trading volumes) at the price Ξ 0 per 1 SERV.