Amazon Warehouse Deal. Amazon offers the used in very good condition Mr. Heater MH18B Portable Propane Heater for a discounted price of $95.65 plus free shipping. Limited time offer. That's the lowest price we could find for one of these heaters. This has 1,180 customer reviews with 4.7 out of 5 stars on Amazon.

Features include Accidental tip-over safety shutoff, heating up to 450 square feet, different heat levels via control knob, blower fan to push the hot air and more.