So, which one is it? An art supply store or lighting shop? Well, it's both. Lee's Studio is a huge lighting showroom on West 57th Street in Manhattan. They've got a large selection of lighting and ceiling fans from high end manufacturers.
Go here if you want to check it out in person before you purchase. They also sell home decor accessories and furniture, but lighting is their gig.
Lee's Art Shop is an art supply store in the same building. Both the art shop and design studio are excellent as far as selection and quality are concerned. Lee must really know his stuff.