Absolutely! Coinbase owns GDAX so you can login to GDAX with your Coinbase login - you just need to validate your ID again. GDAX have much smaller fees - a lot more reasonable. I'd recommend login into GDAX whenever you want to transfer your coins to other exchanges/wallets.
GDAX is an exchange that is owned by Coinbase and shares same credentials (login and password will work on both sites) For someone in Europe, I find out Coinbase have higher price per 1BTC than
www.bittylicious.comLast time I've checked was 267$ difference in price! (200£) I've been using Bittylicious for few years, maybe not cheapest service out there, but very quick and professional. Once I put wrong reference number and to my surprise, at 07.00AM Monday morning I was contacted by support and my issue was fixed with Ethereum send to my wallet. Definitely worth to try.