Maybe, but I'm having a hard time to imagine a scenario where it is really easy. It is not that easy (as, say, soft drinks) neither in Uruguay or Amsterdam. It is expensive at the houses of everyone involved in drug dealing - it is their work after all.

Any way, the exceptions don't affect a open poll as this one. But I would be interest in a research that answer this questions at different realities, such as, slums, high society, drug dealers family, public high school, private high school, etc.

I would say it depends on who you know more than where you are.