Today, 2/28/17 only, get up to 40% off these four Britax car seats as part of Amazon's Gold Box Deal. Here's the best deal, IMHO:
Britax Marathon G4.1 Convertible Car Seat in onyx for $159.00 with free Prime/SuperSaver shipping and free returns, the lowest recorded Amazon price on this car seat. Was $199.00 yesterday. 4.6 out of 5 stars over 359 customer reviews, and is an Amazon #1 Best Seller.
These prices are good for today, 2/28/17 only.