Amazon offers the Britax Frontier 85 Combination Booster Car Seat
in six colors (Maui Blue) for $199.99
with free shipping
. That's the lowest total price we could find by $12. Features include a 5-point harness, 85-lb. weight capacity as a car seat (120-lb. weight limit when used as a booster), high density foam, detachable cover, and more.