Smartop LED Factory via eBay offers this Multi-Color 3-watt LED Lightbulb with Remote Control
in GU10, E27, MR16, or E26 for $5.99
plus 50 cents
for shipping. That's tied with last week's mention and the lowest total price we could find by a buck. It can emit 16 colors and features an infrared remote and four color-changing effects.
Expect this item to take two to three weeks to arrive.