Oh it's too bad you're restricted to a store in the mall....well, it's awesome that you won such a great gift certificate, but....
I love
Martin's Cages. They are super reasonably priced and huge! I have two and a friend of mine bought one as well, and we're all happy with them. Oh and even shipping to Canada and all, they were still a great price.
One warning: I would not buy a cage with a pull out shelf at the bottom again. If your cage is wire bottomed, it is easier to clean yes, but both my chins have had issues with where to pee since I got them the wire bottom cages. I have tried to cover as much of the cage except the wire bottom with wood panels, but they both like to hang their little furry behinds over the ramps and pee through them.
There's always pee on our walls and on our floor in front of the cages because of this. Plus, they just love playing in the wood shavings and I hate that I've robbed them of that joy.