Walmart offers the Evenflo Maestro Booster Car Seat in Thunder for $44.99 with free shipping. (Amazon offers it for the same price for Prime members only.) That's $19 under our April mention and the lowest price we've seen. (It's the best deal in any color today by $10.) It features a harness mode for children from 22 to 50 lbs., seatbelt mode for children up to 110 lbs., compatibility with LATCH systems, cup holders, auto-adjusting belt path, and about twice the recommended federal side impact and structural integrity safety ratings.