Found 2 биржи where OpenOcean is traded for BNB. According to the data on 8 February the most optimal price to exchange OOE for BNB is BNB0 for 1 OpenOcean. This rate is fixed at OpenOcean at the maximum trading volume of the pair OOE/BNB - 2.9 BNB.
Selling and buying OpenOcean (OOE) for Binance Coin
To buy OpenOcean, use the table above.
The maximum daily trading volume is observed in the OOE/USDT trading pair at Digifinex and reaches BNB 170.22 (5.25% of the exchange's total trading volumes) at the price BNB 0 per 1 OOE.
The minimum price to buy OOE for BNB is 0 - on the exchange OpenOcean.