Amazon Lightning Deal: Graco Highback Turbobooster Car Seat For $29.99 Select from 4 different colors. This was $49.88 earlier today and is now just $29.99, a record low price! It has 4.5 star ratings. -The Graco Highback TurboBooster child car seat helps safely transport your “big kid” from 30-100 pounds -Top rated by leading consumer Want to continue reading this post? Click here!