I pay Betterment something like ~$180/year for over $100K in assets, and it includes tax loss harvesting on my non-retirement accounts. Could I go with Vanguard and their terrible web interface with less features? I could. I don't mind paying Betterment what I do though. I don't want to waste time on managing my stock/bond assets; I just want to fund the account and have it be managed programatically.

https://www.betterment.com/pricing/