V is electric potential or voltage in volts. Electricity generation is often done with electric generators, but can also be supplied by chemical sources such as electric batteries or by other means from a wide variety of sources of energy. Electric power is generally supplied to businesses and homes by the electric power industry.
Depending on where you adopt, fees can range up to $400. Purchasing a Great Dane from a breeder can cost between $600 and $3,000, depending on the breeder and the dog itself. The higher price tag usually comes with a show-quality dog, which you might not need if you're just in the market for a pet.
The cost of a guaranteed healthy, well-bred $1000 puppy is a fraction of what it will cost to own that dog for 12 years. A poorly bred dog with bad hips, allergies, and a not so bright disposition will end up costing you thousands more in medical bills not to mention hours of frustration and disappointment.