One of the many problems with Toronto ski shops (at least those downtown) is that they refuse to sell bindings separately from skis. Several shops last winter wouldn't let me buy bindings, they insisted I buy a "package" that included bindings and skis. Ridiculous.
As for popping into a shop... most shops aren't even selling ski gear right now. Sign of The Skier is selling patio furniture or some shit and sporting life has all their shit hidden away to move more bikes, golf, tennis, and yoga gear. You can't even get a pair of skis mounted downtown from May - October.
At least at the show, you can buy pieces of gear like everywhere else.