I bought this car seat on Amazon last year and only used it for 1 week. It's almost new. It's been sleeping in my closet for 1 year. If someone needs it, please take it and make it play its due role. Its price on Amazon is 124.39 now. If you really want it, the price could be negotiable.

The following is a description of the seat in Amazon.

The Graco Nautilus 65 3-in-1 harness booster helps keep your child secure in a 5-point harness, from 22-65 pounds and from 27 to 49 inches. When your child is ready, the forward facing car seat converts to a belt-positioning booster car seat from 30-100 pounds and 38 to 57 inches, then to a backless booster seat from 40-100 pounds and 40 to 57 inches. It’s just like having 3 car seats, in 1.
Finally, the car seat that parents have been searching for is here! Our Nautilus 3-in-1 car seat helps keep your child secure from 22 to 100 lbs. Nautilus is a 3-in-1 car seat that converts from a harnessed booster to a high back belt-positioning booster and finally to a backless belt positioning booster. The harness booster can be used up to 65lbs, and as your little one continues to grow, the Nautilus does too, transitioning into a Highback belt positioning booster which can be used from 30 – 100lbs, and finally into a Backless belt positioning booster for a comfortable fit from 40 to 100 lbs. The seat is designed to help keep your child in a harness booster longer as well as to fit them up to 57" tall. You can easily see Graco's commitment to safety as this seat is extensively crash tested to meet or exceed U.S safety standards, side-impact testing, and outfitted with reinforced steel for effective energy management. Nautilus has been thoughtfully designed with plush comfort features, an integrated cup holder and storage compartments, as well as a one-hand height adjustable headrest to help keep your growing child happy on even the longest rides! This 3-in-1 car seat is will last your little travel companion well into childhood.