The table top looks insubstantial because it's too thin in comparison to the center pillar of the base. I'd probably double the thickness.
Also, $225 seems pretty expensive. After all, the base is $70 or so from a restaurant supplier and the MDF for the top is probably less than $10. I'd agree that most people here would probably build one instead, unless the price were closer to the cost of the supplies.
-- Chris