"Meritline.com offers the Battery-Powered Color-Changing LED Tealight Candle for$1.75 with free shipping. That's the lowest total price we could find by a buck. (However, we saw a 4-pack for several cents less two weeks ago, since expired.) The LED light source inside this candle creates the effect of a flickering, color-changing flame. Each candle operates for up to 20 hours on three AG13 Alkaline batteries (included)."