It seems like everything is disposable these days. You know the deal. Your vacuum loses suction and when you take it in for repair, you're told that the cost of parts a labor will be more than the cost of brand-spanking-new model.
Lately, it's increasingly difficult to find an appliance that's build to last and not designed for planned obsolescence. But if you have a warranty that's still valid, repair might prove your best bet. You may also want to spend some extra money for repair if it's an older, sturdy model, like your mother's favorite mixer.
But if your appliance is older and parts are hard to find, a new purchase may make more sense.
Any store, epecially the big box variety, that sells and repairs appliances may be motivated to convince you to buy a new product, so try to find a reputable shop that just does repairs. Ask for an estimate, which you can compare to the price of a new item. To peruse other consumers' experiences with repair shops and how they deal with this issue, check out Angie's List for member reviews and ratings.