Online retailer ThinkGeek.com debuted a Desktop Zero-Point Infinite Power Generator, at a price of only $199.99, although the item was permanently "On Backorder".

"At the quantum level, all matter in the universe vibrates constantly - even at absolute zero! The Desktop Zero-Point Power Generator takes advantage of this seething abundant energy by converting naturally occurring EM energy into 120 Volts / 200 Amps of electricity.
The generator is 8 inches square, and weighs just under 3 pounds. When activated, the generator will generate power indefinitely! The unit emits a very quiet whirr, and less than 600 rem of residual ionizing radiation! ThinkGeek recommends you drain the unit's non-volitile waste chamber once every three months, and dispose of the tritium/deuterium slurry at a licensed disposal facility.
Sorry, not available in 220V."

A ThinkGeek spokesman later told Wired magazine that long after posting the generator for sale, they continued to receive numerous requests to purchase it: "We've had people e-mailing us from all over the world telling us they were very interested in it."