eBay with vipoutlet has the open box Ozark Trail 360° Propane Portable Indoor/Outdoor Heater (FL11OT) on sale for $61 - 10% off with coupon code VIPOUTLETMARCH [Exp 3/31] = $55 with free shipping. See reviews at Walmart.

• Designed for areas up to 275 sq. ft. Works with either 1lb or 20lb propane tanks (not included).