If your kid has outgrown their car seat (or will soon) or the car seat you have is expired or has been in an accident, now is the time to buy a new one: Target’s twice-annual car seat trade-in event is happening from September 21 to October 4.Between birth and roughly age 12, most kids transition from an infant car seat to a convertible car seat to a booster seat; many of those, including ones we recommend for their safety features and ease of installation, cost more than a couple hundred bucks each. (Unsure about which type of seat your kid should be in right now? We have advice on how to know when to make the switch.) So no matter what stage your child’s at, we’ve long suggested that the Target trade-in event is worth checking out for a potential good deal — not just on car seats, but on lots of other kid essentials.