Ebay offers 58-Gallon Portable Fuel Tank for $439.99 (reg $539.99) with free shipping.

Product Description:
This portable diesel tank consists of superior quality polyethylene material, achieving durable and long-lasting use. The 12V transfer pump will deliver fuel at 10.6 gallons per minute, providing the ultimate way to easily refill while protecting your assets from contaminated fuel. And the newly increased filter ensures your fuel keeps clean and pure. Therefore, it's a perfect tool for refueling vehicles or appliances in agriculture, industry, marine, gardening, etc.
Features:

•  Robust Tank Construction
•  58 Gallon Efficient Refueling
•  Upgrade Filter Design
•  Automatic Fueling Nozzle
•  Effortless Transportation

Specifications:

•  Color: Black
•  Material : Polyethylene (PE)
•  Exterior Finish : Polyethylene
•  Item Dimensions : 33.9 x 21.9 x 26.8 inches（LxWxH）
•  Transfer Pump：12V DC
•  Max.Flow Rate: 10.6 GPM
•  Output Power: 140W
•  Rotation Speed:2600RPM
•  Hose Length:13.1ft/4m
•  Electric Wire Length:13.1ft/4m