Hardly used drum dumper for sale.  They sell for $739 plus shipping on global industrials website.  In very good condition.  

Description: 

Compatible with 55-gallon drums
✓ 1500 lb. capacity (900 Tilting Half-Full Drum)
✓ Pouring is controlled with the 10' pull chain

The Global Industrial™ Forklift Tilting Drum Dumper transforms an existing forklift into a drum-handling and transportation solution. Ideal for warehouses and a variety of drum-handling storerooms. It connects to the forks of a forklift to raise, tilt, and drain up to 55-gallon steel drums. Pouring is controlled with the 10' pull chain from the driver's seat of the attached forklift. Fork pockets are 7"W x 2-1/2"H x 26-5/8"D, spaced 31-1/2" apart center-to-center (38-1/2" overall). 1-Year Limited Warranty.

Note: 900 Lb. Tilting Capacity with Half-Full Drum.
OSHA requires contacting the manufacturer of your fork truck for written approval for the use of any fork truck attachments.