Walmart.com has the Graco Nautilus 65 3-in-1 Harness Booster Car Seat (black/gray) on for $104.99 shipped.

• 3-in-1 harness booster helps protect your child, from toddler to youth
• Harness Booster (22-65 lbs), highback booster (30-100 lbs), backless booster (40 ? 100 lbs.)
• Steel-reinforced frame provides strength and durability for years of use
• 3-position recline helps keep your growing child comfy