Ebay offers Portable Propane 225,000-BTU 3 Burner Grill for $78.99 (reg $157.98) with free shipping,

Product Description:
This powerful three burner, equipped with a cast iron head, outputs a whopping BTU of 225000. And it can adjust the firepower to make your cook more delicious. It is suitable for various types of pot because of burner bracket. So you can enjoy cooking outdoor with your family to have a happy time. Do not hesitate, just buy it.
Features:

•  High-pressure three burner camp stove, sturdy and durable design, made of cast iron long lasting and good for projects
•  225000 BTU of cooking power
•  Ultra-portable with removable legs
•  0-20 psi adjustable make cook faster and cleaner than other standard propane burners
•  Perfect for camping, fishing, parties, tailgates hunting and home brewing

 Specifications:

•  Product Type: Three Burner
•  Material: Cast Iron
•  Burner Diamter: 10.24" / 26cm
•  BTU: 225000
•  Brand: ZOKOP
•  Furnace Head Diameter: 5.51" /  14cm
•  1.2m Leather Tube Included: Yes
•  Dimensions: (34.25 x 17.72 x 29.72)" / (87 x 45 x 75.5)cm (L x W x H)

  Package Includes:

• 1 x Three Burner Stove
• 1 x 0-20 Psi Regulator
• 1 x Instruction