Graco 8J00MTX Nautilus 3-in-1 Toddler Car Seat (Matrix) for $120.00 shipped.  Here is a screenshot for your reference.  This baby car seat holds babies from 20 lbs. to 100 lbs., extended 5-point harness, and can be converted into a high-back belt positioning booster or backless booster.  Most places have it for about $139.