Digital Center via Amazon offers the Remote Controlled 16-Color 3-watt LED Spotlight Bulb for $8.20 with free shipping. (Several other third-party merchants at Amazon sell it for around the same price.) That's $4 under the per-unit price we listed two weeks ago (that was available as a 2-pack only) and the lowest total price we could find by $7. It can emit 16 colors and features a wireless remote and four color-changing effects.

Of note, this item may take two to three weeks to arrive.