Regarding discussions over the past year about Omega-style grafting
tools (especially for use by novices during grafting clinics) I note
that Lee Valley is now offering a tool for $22.50, with free shipping
on orders until March 26. The direct link is http://www.leevalley.com/US/garden/page.aspx?cat=2,47236&p=64798
I have not used this exact tool, but it appears to be reasonably well
made. My experience with Lee Valley has been 100% positive over the
past dozen years.