Walmart has this popular Graco Nautilus 65 3-in-1 Multi-Use Harness Booster Car Seat on sale for $99.88 (originally $149.88). Free shipping.
This car seat is ranked 4.5 stars out of 5 from over 3280 reviews. This 3-in-1 harness booster can be transitioned to the following:
- Harness Booster (22-65 lbs)
- Highback booster (30-100 lbs)
- Backless booster (40 – 100 lbs.)