Indeed, our contractor tipped us off that this is where he gets all his electrical supplies in lower Manhattan because the prices are better.
On checking it out, we were pleasantly surprised. Clearly catering to the trade, Chinatown Electric is a very efficient, well stocked business that will get you in and out in no time. Prices are good and lower than typical retail operations.
We purchased all the electrical we needed for our apartment for $250, including track lights, gem boxes, ceiling fixtures, dimmers, light bulbs and bx cable (some of which are pictured above).
You won't find any fancy design items here, but for basic apartment repairs and cheap solutions, it's a great resource.