Drop the price of this TP-Link KL130 Kasa Multicolor Smart Light Bulb from $29.99 to $13.99 to $11.19 at Amazon after you check the 20% off coupon box below the price. Shipping is free for Prime members, with a free Prime trial, or on orders over $25. Otherwise, it starts at $5.99. This dimmable smart bulb can display a range of millions of colors and can be controlled using an Amazon Echo, Google Home, or the Kasa smartphone app. No hub is required. Sales tax is charged in most states.