Amazon has the SuperHandy Cordless Disinfectant Fogger Machine for $519.99 – 20% off when you clip the under price on right hand side = $416. Shipping is free.

• Cordless, operates off of a rechargeable battery (included)
• 2.6-gallon capacity produces droplets of 0-50μm in size
  48-volt Li-Ion battery, ULV fogging equipment is used predominately for the application of disinfectants, biocides, fungicides, & pesticides