One more example – the Bedini engine. It is amusing that this person, who succeeded to create the source of free energy, employs his fame for sale of the audio-amplifiers and not of the sources of energy. He could sell at least a desk toy, meant for charging of the mobile telephone or similar things. With taking into consideration his fame, the demand would be huge and each customer himself could measure the excess of energy (
http://www.icehouse.net/john34/bedinibearden.html). One more his creation – the Clarifier; it is a device, which improves the quality of the recorded sound or image on the digital disc (not the quality of recording, but the quality of the contents)
http://www.bedini.com/. John Bedini’s creations are popularized by Tom Bearden, who is the author of the books and films about free energy. For the sake of interest, I recommend you to watch the film “Energy from the Vacuum - part 4". According to this film, an elderly person Howard Johnson, who devoted dozens of years to the magnetic engine, cannot demonstrate the version in practice because he is short of magnets.
I do not assert that there are no sources of free energy, but on the contrary, they exist and are being used from long ago. If the device, which was once manufactured and produces energy without the fuel costs, is implied under the source of free energy, then the following objects are attributed to this category, i.e. a wind-mill, a hydro-electric station, solar batteries and heat batteries. Energy costs much, if there is no direct relation between the prime-cost and the market price; monopolization of the resources, secured by the authorities’ activity, serves as the reason for it.