i get some of my extracts from Prepared Pantry:
i usually wait till i need cocoa powder to cut down on shipping and then just order all together. they have a fantastic cocoa powder from Holland that i use that is reasonably price.
i also just used the organic strawberry extract to make some strawberry buttercream and everyone who tried it said it was the best strawberry frosting they’ve tasted. it doesn’t have that fake strawberry taste that some extracts have.
i buy on amazon as well when it’s free shipping. i just got a 32oz bottle of Nielsen-Massey Madagascar Bourbon Pure Vanilla Extract for 32.99 with free shipping. http://www.amazon.com/gp/product/B001GE8N4Y/ref=ox_ya_os_product
Hope this helps!