Word Distinction: Price, Cost and Charge

Compare price, cost and charge. When talking about the money needed to buy a particular object, the usual word is price:
What is the price of this watch?
Cost is like price, but is used less for objects and more:
a) for services
the cost of having the house painted
b) for general things
the cost of living
the cost of food
The amount of money you pay for something is what it costs you:
How much did this watch cost you?
The person who is selling goods or services to you charges you for them:
How much did he charge you for repairing the car?
Charge means “a sum of money demanded especially for allowing somebody do something”
There will be a small charge for admission to the museum.