Amazon has Britax Marathon Convertible Car Seat for $219.99 + free shipping.
Product Features
Color Name: Bridgeport
* Convertible, rear facing five to 35 pounds and forward facing from at least one year old and 20 pounds up to 65 pounds
* Side impact protection distributes crash forces, shields from vehicle intrusion, and contains the head and body
* Higher forward facing seat capacity allows children to remain harnessed up to 65 pounds
* Tangle-free, five-point harness with four harness heights for a snug and secure fit
* Premium push-button latch connectors for a quick, simple and tight installation
Britax Marathon Convertible Car Seat $219.99 Fs 
