Never heard of it, but in Canada, we don't import weed from Jamaica as our weed is better and way cheaper than their high quality stuff, so if your buddy says it came from their, he's lying to you.

Where do you live? Like the aboved poster said, $20 a gram in Canada is very strange. High quality usually goes for no more than $10 a gram. Find a new dealer, because at those prices, you are getting ripped off.