It is unwise to pay too much, but it is worse to pay too little. When you pay too much, you lose a little money - that is all. When you pay too little, you sometimes lose everything, because the thing you bought was incapable of doing the things it was bought to do. The common law of business balance prohibits paying a little and getting a lot... it cannot be done. If you deal with the lowest bidder it is well to add something for the risk you run; and if you do that you will have enough to pay for the something better.