Blick Art Supply

Best selection of fine art materials with brick and mortar locations and ecommerce site with reasonable shipping

Amazon

We all know amazon has it all, they have good prices on art materials if you know what you're looking for, be wary of imitation products from third party sellers

A little pricey but if you have coupons and catch a sale they have every crafting supply you could want and a selection of fine art materials as well with numerous locations as well as ecommerce site