Oak Living via Amazon offers Prime members the LuminWiz 14-watt (100-watt Equivalent) Recessed Retrofit LED Downlight 4-Pack in several colors for $37.49. Coupon code "2DRWSSVA" drops it to $33.99 with free shipping. That's $82 off and the lowest price we could find. Each 14-watt bulb has an E26 base adapter and purports to last for 25,000 hours.