It's tough to get a good price on a new good ski vice in Ontario, Canada. By good vice I mean the world cup versions of Swix, Toko. Holmenkol, Wintersteiger and Ski Man - the models with spring loaded adjustable end clamps. All made in the same place, with minor tweaks between the models, for example - center clamp jaw width, and mold designs on the end clamps.
The best deals I have found on used clamps have been from kijiji and ebay, but you have to search regularly to find them. I hear the american amazon blows out these w/c clamps once in a while.
Here's some of my vises, and what I think of em.
Toko w/c ski vise - almost same as the other brands noted above. Best vise for waxing/tuning. Adjusts easily/quickly for all lengths of skis.
Shittiest expensive model made by the same factory in Italy. Don't waste your money on these, unless you are tuning once a year.
This is a $600 plus double vice distributed by wintersteiger and montana. Useless for tuning, but the best for adjusting/mounting binding.
Burton RED snowboard vise, with a center clamp thingy from tools for boards,that I use regularly in a shop environment. Not bad vise that is adaptable to skis. Easy to build one out of wood and some hardware.
Swix Pro Vise 500 - not in production anymore I think. Another one you could build yourself. (There is a post of a diy version of this somewhere in this forum)