Found 2 exchanges where Ethereum Classic is traded for ETH. According to the data on 28 August the most optimal price to exchange ETC for ETH is Ξ0.003 for 1 Ethereum Classic. This rate is fixed at KuCoin at the maximum trading volume of the pair ETC/ETH - 2 ETH.
Selling and buying Ethereum Classic (ETC) for Ethereum
To buy Ethereum Classic, use the table above.
The maximum daily trading volume is observed in the ETC/USDT trading pair at BitDelta and reaches Ξ 5 069.96 (0.576% of the exchange's total trading volumes) at the price Ξ 0.0031 per 1 ETC.
The minimum price to buy ETC for ETH is 0.003 - on the exchange KuCoin.
The maximum price to buy ETC/ETH is 0.0033 - on the exchange Kraken.
Warning: some ETC markets show an abnormally wide spread — those quotes may be unreliable (thin liquidity or off-market trades). Cross-check the volume against several venues.