Walmart offers the Fisher-Price Imaginext Remote Control Bat Bot, model no. BFT56, for $45.13. Opt for in-store pickup to avoid the $4.97 shipping fee. (Amazon charges the same with free shipping for Prime members.) That's $4 under our mention from last June and the lowest total price we've seen. (It's the best deal now by $5.) It features over 100 sound and light effects, remote control, Batman figure, and four launcher disks. The Bat Bot requires six AA batteries (included), while the remote control requires two AAA batteries (not included).

Update: It's now sold out at Walmart; however, Amazon still offers it for $45.13 with free shipping.