I’ve had great luck on ebay searching for such tools.
If you’re not into ebay, I like http://hyperkitten.com/tools/ForSale/Tools_FS.php, but he only updates the listings once a month, and the tools that are listed are pretty different each month.
Jim Bode tools also appears to have a lot of nice stuff: http://www.jimbodetools.com/Planes-c3/ I’ve never bought from him, so can’t comment on the experience.
Good luck!