I’m kind of cheap especially on my hobbies (like home automation). Found this deal today. You have to live in DC or know someone who does.
If you don’t see the price that I listed, look in the upper left corner of the page and click “You’re Shopping…”, then click “Find Other Stores”, then enter 20018.
They limit you to 4 per order, but I’m not sure if they enforce that in the store or if you can place multiple orders.