I came to Canada two years ago with my Sony Xperia Z1 from Europe. I love Koodo mobile - all this time I use the Tab+ for 55$/month with 5 Gb of data. Great plan, tried it almost everywhere in ON, MB, SK and AB. Works great even in rural, nice coverage and all included.
The only thing is that makes me really sad - my Z1 is 4 years already and I'm not a very accurate user, so in two to three months I plan to change the phone. And, of coarse, I'd like to get a newer Sony Xperia - I've been with them since they acquired Ericsson. But Bell is the only vendor to deal with Sony here ((( I don't want to change the mobility provider, but the only way out is Koodo would have an oppty to broaden their assortment with Sony Xperia phones.
So - may be you could add these models to your shop? These phones are really good, extraordinary photo quality, sound is great and frequent software updates. Just give it a chance )