This KeyFit 2-in-1 Belt-Positioning Booster Car Seat from Chicco.com drops 33% $149.99 to $99.99 when you place it in your cart. Even including the $10 shipping fee, this is the best price we can find by $30-$40. The well-reviewed seat features head and shoulder side-impact protection and can be converted to a backless booster for older children. It includes two cup holders, removable and washable seat pads and arm rests, and the seat cushion can be extended into a leg rest. Sales tax is charged in most states.