Ancho Chili Powder
You could try the spice place (The Grainry) in Granville Island market. I bought some from there awhile back. You could call them to make sure they currently have it in stock before you go. Here is their number. (604) 681-6426
Also, you could try Whole Foods on W8th. I'm not sure if they have it. I bought a bunch of bulk spices before from the Whole Foods at Park Royal but I wasn't specifically looking for ancho chili powder that time.