Coffee Crisp candy rarely ventures beyond Canada's borders
atlasobscura.com
atlasobscura.com
I think it’s probably the type of chocolate that is used; whatever “chocolate” is in the U.S., bars taste like 80% wax or something. That just isn’t what chocolate is like elsewhere.
Also, the variety. In the U.S., you go to a vending machine and you see like 5 slots that are just different kinds of M&Ms, 3 kinds of Milky Ways, etc. In Canada, there are so many options that vending machine slots are usually entirely different things and you have to go to a 7-Eleven or something to see the extra types of M&Ms and stuff.
Some even go to outlets like Costco to pick up huge, very heavy bricks of them. And at Halloween it would be extremely unusual if the kids didn't trick-or-treat several bars.