Seems to me you could use a 2x4 with veneer (poster board, etc.) glued
to one end, but I certainly understand the pleasure of spending money.
The Veritas fence is supposed to be good and you can buy little
jointing shims for it.

http://www.leevalley.com/wood/page.a...=1,43053,43885

http://www.leevalley.com/wood/page.a...885,42837&ap=1

Mark