There is scarcely anything in this world which someone or other could not make a little less well and sell a little cheaper, and people who only go by the price fall fair prey to such practices.

It is unwise to pay too much, but it is even worse to pay too little. If you pay too much, you loose some money, that is all. If, however, you pay too little, you sometimes lose everything, since the purchased object cannot serve its intended purpose. Economic law forbids receiving much value for little money. If you accept the lowest offer, you have to add something for the risk you take. And if you do that, you also have enough money to pay for something better. 

John Ruskin
English social reformer 
(8.2.1819 in London - 20.1.1900 Brantwood/Lancashire)
Picture from Wikipedia.org