The Gransfors-Bruks broadaxes can be purchased online at Highland Hardware:

http://www.tools-for-woodworking.com/index.asp?PageAction=VIEWPROD&ProdID=1113

It's one of the better online woodworking supply houses.

I've bought two on ebay. One works very well and the other turned out to be a mast axe, one that that has a rounded back for hewing round shipmasts, or so I've been told.