TopperSun via Amazon offers the Minger Smart Music LED Light Bulb for $17.59. Coupon code "ZG5LWSVJ" cuts the price to $8.79. Plus, Prime members receive free shipping. That's a buck under our April mention, $9 off, and the lowest price we could find. This 40-watt equivalent bulb features a Bluetooth range of 33 feet. Deal ends July 31.