No - we don't carry them (I don't know why).
You could try
http://www.apple.ca/ if you're willing to buy online (it's a bit cheaper) - or else London Drugs sells them, and you might want to also check for a local Apple store.
And yes - you can view SOME windows files on a Apple PC, but not all.
MACs are good if you're not a gamer and are using it for word processing, imaging, video editing, etc.