you pay too much, all you lose is a little money - that's all.
But when you pay too little you sometimes lose everything
because the thing you
was incapable of doing the thing it was bought to do.
common law of business prohibits paying a little and getting a
lot! it just can't be done.
you deal with the lowest bidder it is well to add something for
the risk you run and if you do that,
will have enough to pay for something better."