TopperSun via Amazon offers the Minger 60-watt Equivalent Light Sensing Dusk to Dawn LED Light Bulb 3-Pack in Soft White for $19.99. Coupon code "OGUU6DLP" cuts that to $14.99. Plus, Prime members bag free shipping. That's a buck under last month's mention, $5 off, and the best price we could find. They feature a 600-lumen output. Deal ends May 30.