Some of the local dispensaries here in Cali are doing promotions giving away a gram of shake with a minimum purchase. It's the first time I've tried shake, and I think it could be a very cost effective way to vape. Shake is the small leaves that fall off when they are packaging hi-grade dank buds. It costs $20-$40 per eighth, versus $50-60 or so for an eighth of hi-grade. So the cost is about half what regular bud has. It's usually a mixture of all the different strains they've been processing, so the disadvantage is you don't get to choose what ratio of indica to sativa you are getting. And it's going to be a mixture of strains rather than a pure strain. It seems to me that hi-grade shake is in some sense ideally suited for vaping: Yes you get a few more sticks and leaves than you would buying dank, but when you vape, those extra sticks and leaves don't ruin the taste like they would when smoking. Also, the shake is usually on the dry side already, and vaping works best with dry bud. So I'm thinking shake could be the way to realize those cost savings that vaporization promises. It seems to be about a third cheaper for the same amount of vaped THC than hi-grade.