So not sure exactly when this was released, but Coinbase original flavor now has advanced trading with market and limit buys. Checking out the fees on Pro and the regular site, they seem to be completely identical. I’m not sure if there is anything I am currently overlooking, but from what I can tell, you will no longer need to transfer or buy and sell using Pro if you like the normal site.
To get to the advanced trading just click on the trade button in the menu bar and there should be a drop down now in the top left that will let you switch between the 2 options.
Edit: Please make sure you are on the ADVANCED TRADING tab, that looks like Pro, if you are checking the fees. [This is what it will look like](
Edit Dos: This is desktop only
Edit 3: It’s rolling out slowly. It may not be available to you yet. [They do not indicate if it is by region or something else.](