Amazon has this Graco Atlas 65 2-in-1 Harness Booster Car Seat, Glacier
For 57.49! List price goes for 129.99!!
•2 seats in 1: 5-point harnessed front facing car seat and highback belt-positioning booster
Converts from 5-point harnessed car seat (22 – 65 lb.) to highback belt-positioning booster (30 – 100 lb.)
•Simply Safe Adjust Harness System adjusts the height of your harness and headrest, in one motion, to ensure that your child is always properly secured
•Engineered & crash tested to meet or exceed US standard FMVSS 213
•Integrated harness storage compartment stores unused harness straps