CTA inside the grid or below it? Both, but not the same one

The row-level button and the page-level button do different jobs.

Inside the table:
— the button belongs to a specific product. Label it with the action, not "Learn more": "Get 30% off", "Check availability";
— keep it in the last column, aligned right, same size in every row. Uneven buttons look like a bug;
— on the recommended row, the button can be filled; on others, outlined. Hierarchy without shouting.

Below the table:
— this is for the visitor who scrolled, compared, and still hesitates. The button here should point to your single top pick with a one-line reason;
— do not repeat the whole grid of buttons. One decision, one action.

Common mistake: a button in every row plus a sticky bottom bar plus a sidebar widget. The visitor gets three competing calls and picks none.

Measure clicks per row separately. If row four gets more clicks than row one, either row four deserves the top spot or your ranking logic needs a second look.