Exactly. For example it would be 99x cheaper if you were going to buy $10.00 / day vs the Coinbase feature (don't get too excited, it's $0.99 in fees for Coinbase's out of the box feature vs $0.01-$0.03 in fees you'll hit by using the Coinbase Pro API). Definitely requires more set up and maintenance, but that's half the fun of it :)