Not really anything on sale this next month, but the current catalogue (to Aug 21st) has the Movie 2-pack (Deluxe 08 Bumblebee & Voyager Optimus) for $50.
I was thinking that it was a Kmart exclusive for their sale, but could be a general release item that only a couple of store chains were interested in.
Soundwarp and I saw them at a Toyworld on the northside somewhere.