Forward-facing car seats are available at a variety of low and high prices, and the one you pick will largely depend on your budget. Convertible car seats that transition into a booster may cost you more upfront, but you won't need to buy a booster down the road. Depending on your needs for the forward-facing car seat, you can expect to pay anywhere from as low as $45 to on the higher end of $800, with an average price around $150 to $350.