Electronic Cigarette | the SMOKeFREE

Im thinking of buying one of these,
If your unfamiliar here’s the link:
https://www.blucigs.com/index.php
What I need to know is with this particular brand
Can you refill the cartridge?
With “juice” from say Johnson Creek?
http://www.johnsoncreeksmokejuice.com/
Or will I have to continue to buy refills from Blucigs

Is there anywhere else you can buy the blu electronic cigarette other than online? And has anyone tried them? They seem like a great alternative. I am by no means a regular smoker. Maybe 3 a week or I just smoke at parties haha