Lee's three-legged press stand fits into a corner pretty well. But it doesn't fold up, so I consider it not worth the asking price.
I use either my Stanley or Black & Decker folding workbench. I bolt my press to a 2x6 board and clamp the board to the workbench (I used to just wedge it into the drawer of an end table in the living room, but am more sophistated now). Countersink the bolt holes-no scratches allowed on the furniture and a flat bottom helps stability.
I keep my entire loading bench in three toolboxes (exclusive of the tumbler, components and a zillion useless spare parts that I can't bear to part with).
I posted pictures in this thread (Post #49, page 4)http://rugerforum.net/reloading/29385-b ... oader.html
I hope that helps.
Lee does have a setup for a quick clamp system. The early models had some problems, but they added a pin that cured that. Still, the best quick-mount system I have ever though of is to mount a receiver hitch (like the square sockets you see on trucks for hauling trailers with a removable trailer hitch) under your bench and mount your press on the aft end of the male part. You shouldn't need the 2" square ones, but the light-duty ones should do if you can arrange for there to be a tight (no slop) fit.