Sadly, £21 is about $42 CAD at the moment.
Looks like ebob has a nice one for £17.50, shipped though, so that's certainly an option. If I can find a cheapie die-cast toy that can stand in for one, I'd rather take that option (it doesn't have to be an actual Blitz, just something similar an in the right scale). There's a Lledo Mack Truck that's actually surprisingly close in appearance, but I think it might be too small.
EDIT: Hm, $30 and local is even cheaper. I wonder if they allow local pick up? If they do, that would beat ebob. Of course the ebob kit is nicer and he has a promotional 1:48th infantryman that looks great...