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The cost of the electricity plus the cost of your time could well make your hairdryer the most expensive one of all. So what principles should you 1 when you go out shopping? If you keep your home, your car or any valuable possession in excellent condition, you'll be saving money in the long 2 . Before you buy a new appliance, talk to someone who owns one. If you can, use it or borrow it to check it suits your particular purpose. Before you buy an expensive item , or a service, do check the price and what is on offer. If possible, choose from three items or three estimates.