Here is an indirect process if one has both Bittrex and Coinbase accounts. Buy or Sell HIVE at Bittrex for USD or BTC. Convert USD or BTC to USDC at Bittrex. Transfer USDC to Coinbase and sell for USD and transfer to bank with zero fee or vice versa buy USDC at Coinbase and transfer to Bittrex. The slippage cost is still very low.
RE: Further evidence Coinbase is opening up to Altcoins... It's time to get HIVE a listing