Best Buy has the Insignia Portable Wire Heater on clearance for only $11.99! (Reg. $29.99) This has great reviews! It can heat up to 193.75 sq. ft. which is perfect for a room or small office. It has an overload protection to provide safe operation. It also has an LED indicator light to remind you when the heater is on.
Plus, choose in-store pickup to save on shipping.