Cardeddy via eBay offers this Solar-Powered 3-LED Outdoor Light for $4.14 (C$5.29) with free shipping. (Amazon charges the same.) That's $1 under our expired mention from yesterday and the lowest total price we could find today by a buck, excluding the mention below. It includes a neck bracket and three screws for attachment to 1cm borders (such as gutters) and is water resistant.

Note: Expect two to four weeks for delivery.