RE:RE:RE:RE:Ottawa considers softening marijuana laws I think if it was legalized there would be some impact but I wouldn't wager a guess as to how much.
I would say there are probably a lot more personal grows right now than people realize like 2 or 3 plants that the police don't even bother about, the RCMP came across a number of them during the flooding at High River and didn't bother to even take the equipment away never mind pressing charges.
Why buy it when you can be self sufficiant for much less, kinda like my beer making hobby.