how much does an infant car seat cost?
1 An infant car seat can accommodate a rear-facing infant that weighs up to 22-35 pounds. 2  A car seat of this type can cost $60-$400. 3  The Evenflo Discovery 5 can be purchased for $60 while the Britax Chaperone will cost around $190.hile every car seat is different, it is suggested by CarSeat.org that children stay rear-facing until they are at least one year old or up to 35 pounds. Some newer car seat models even have the capabilities of keeping a child up to 45 pounds rear-facing.