MORE THAN U CAN AFFORD
however much you pay for them(1,000,000).
Yes, the outer fences had electric currents.
All the camps had electric fences.
To buy an electric fence you can order from a reatialier of these fences. They come to your home, measure your lot, and will do the installation job as well.
Most perimeter dog fences are electric, but there are alternatives. Best Friend Dog Fence is one that is non electric: http://www.bestfriendfence.com/dog-fencing-info.asp
There are companies in Houston Texas that offer service to install electric fences. The companies include Doggie-Do-Rite and Mr. Electric of Northwest Houston.
You can purchase electric fences online and in stores. If you are looking for more information on electric fences, you can check out http://www.ibiblio.org/farming-connection/grazing/features/fencemis.htm.
It is at the Control Center
You need to specify which camp.
The fences consisted of two high rows of barbed wire with a high-voltage electric current. (The Boy in Striped Pyjamasis very misleading about the fences).
The electric dog fences are actually very effective. We didn't start using them for my dogs until we moved recently, and my dogs are 9 and 10 years old, and they were surpried by the fences, but the slight shock kept them from wanting to pass.
One can obtain wireless electric fences for dogs at shops like Petco, Petsmart, Petsafe and many others. They are even available at Amazon or Ebay.