PEI only has about 125k population for the entire island, I think.... I've seen a couple people around, like, literally 2, so I would imagine there are a few more. I used to live in Ontario, and have a buddy in Ottawa who's told me about a couple of shops in the area that aren't bad.
There's only one vape store around, and there's a few things that irk me. I asked about an Aerotank mini (he had lots of Kanger stuff) and was told they're not even available yet, so anything off of the internet is fake. Also, they only sell premade juices, 18mg or lower, and looked at me like i had 2 heads when I asked about any DIY stuff at all (nic base, pg/vg, kanthal, wicks, etc)... "I don't have any DIY stuff. You're not going to find that here, so if that's what you're looking for you can just go somewhere else." When I asked him why he won't sell any of "that stuff" he replied "I'm not really into shooting the $#!& with you all day, (cursing in front of my 10 year old son) so if you want to know something about the products I sell, fine, otherwise...." *nod towards the door* Not exactly market building, or conducive towards getting any business from me, that's for sure. I can't imagine it staying around very long if other potential customers get the same treatment.
Luckily, there is INTERNET. I can buy all the 100mg nic, kanthal wire, silica wicks, flavor concentrates, AND AEROTANK MINIS that I want, no BS, and 25-50% lower prices. As far as a mod, I really don't want to carry around a police sized flashlight looking stick, box, puck, pipe, etc

Something the size of a 1600mah vision spinner with a full sized aerotank or nautilus mini would be about as large as I would go. I like the pen sized form factor, which is why I thought a Kayfun mini clone might be fun to play with, or even rebuilding the protank 2 coils just to give it a try.