Amazon has the Britax One4Life ClickTight All-in-One Car Seat for only $244 Shipped! (Reg. $400) Converts from a rear-facing infant car seat, to a forward-facing 5-point harness seat, to a high-back belt-positioning booster seat. 10 Years of Use: One4Life convertible to booster car seat grows with your child up to 63” in height.