LED bulb for general lighting priced below $20

The Home Depot is now offering a 40-watt equivalent LED bulb online for under $20. Spotted by The New York Times, the bulb--made by Lighting Sciences Group and sold under the EcoSmart label--will be available in stores in September.  Lighting Science Group's A19, which puts out as much light as a 40-watt incandescent and uses about eight watts. The $20 price tag, which Home Depot has been offering since at least June, won't necessarily open the floodgates to LED replacements of incandescent and compact fluorescent bulbs, which still cost far less.