What's the easiest (and least expensive) way to take the GAS I've accumulated in Neon wallet and convert it to NEO? I've got accounts with Poloniex and Bittrex. Thanks.
Poloniex & Bittrex do not trade in GAS, the only exchange I know of (I think there may be other Chinese ones) that deals in GAS is Binance.
https://www.binance.com/trade.html?symbol=GAS_BTC