I haven't seen this mentioned before (if it has been, I apologize), but today at Walmart I found something new (or at least I think it is).
A Rescue Bots Optimus Prime Rescue Trailer Bonus Pack for $25.
I've attached some photos, so if you've got a little one that's into the Rescue Bots, this is a pretty good deal.
Also available on-line here (http://www.walmart.com/ip/Playskool-Heroes-Transformers-Rescue-Bots-Optimus-Prime-Rescue-Trailer/26976381).
MIKE
engledogg