Just in case anyone is interested in a Silverbolt redeco that officially combines with the limbs of Optimus Maximus - Sunstreaker, Mirage, Prowl, Ironhide (CW Wave 4 Deluxe).
Strangely, it's going for $19.99 (i.e. no 25% discount) and you will need to find a filler item $4.01 or more to qualify for the limited time free-shipping (spending $24 between May 20 and 23).
http://www.toysrus.ca/product/index.jsp?productId=61707086
Personally, I'd wager the figure will start to appear in stores very soon.
EDIT: Price adjusted to $14.97