Update: Deal over.
Frontier G1.1 ClickTight Harness-2-Booster Car Seat – Link 
For today only, Amazon has this on sale for its lowest ever at only $199.99 w/ free shipping!
- Click tight installation system ensures that everyone can install the car seat securely and confidently by just buckling the seat belt.
- Safe cell impact protection is an integrated system of safety components, including an impact absorbing base, tether and harness, an impact stabilizing steel frame, and complete side impact protection plus.
- Safe cell complete side impact protection plus provides an advanced level of protection: a deep protective shell absorbs crash forces and shields your child from debris, and an energy-absorbing headrest keeps your child’s head and neck secure.
- Quick-adjust, 9-position harness and 2-position buckle allows you to easily move the harness upward and buckle outward for a comfortable, secure fit as your child grows.
- Front-adjust recline easily alters the seat angle for your child’s comfort.