Amazon has the Britax Grow with You ClickTight Harness-2-Booster Car Seat (Cool Flow Teal, E1C199T) for $210 with free shipping. Great Amazon reviews (4.8/5 stars).
$210 retail: $340Report
Kohls has the Delta Children Hercules Stroller Wagon (62004-001) for $170 with free shipping. Includes $30 Kohls Cash with purchase (redeemable 4/17 to 4/24).