Shatter is sold in most dispensaries here in Vancouver, BC
I stand by Pie Eye Extracts shatter and resin and budder. There are many other brands of shatter but I find this one is most consistent when it comes to quality..
I buy my stuff online if I couldn't make it to town during the week as well, here's is my favorite site
http://thcdab.ca/product-category/shatter/ for online ordering, I usually get it Wednesday when I order Monday, or if I made it to town they sell the same products at Green Valley Medicinal on Fraser & Marine and I think I've seen it at the healing cente before as well