After removing and installing the cam gears using the old timing belt, vise grips, and a good 10mm hex socket I'm glad I didn't waste any money on the tools. However, if you want them you can get them from http://subaru.spx.com/index.asp
WRX CAMSHAFT SPROCKET WRENCH ST 499207100 and ST 499207400, Sti CAMSHAFT SPROCKET WRENCH ST 499207400 and ST 499977500. Most of the engine builders don't use the tools. I was set on using them until I talked to a few professional engine builders. I have heard they are around $200 and to me that is a waste since there are so many ways to remove the cam gears without them.