DrHotDeal via eBay offers this Triangular Wood Digital LED Alarm Clock / Thermometer in several colors (Brown pictured) for $10.99 with free shipping. That's the lowest price we could find by a buck, excluding the below mention. It measures 4-1/2" x 3" x 3" and features two display modes (time only or time/date/temperature rotating), 12/24 hour format, volume control, and three brightness settings. It can be powered via the included USB wall plug or via four AAA batteries (not included).

Don't mind waiting for your deal? Banggood offers it in Brown/Red for $10.58 with free shipping. (It requires 7 to 20 business days for delivery.)