It should also be noted that the Amazon rule is that any dissatisfaction is met with an immediate refund or replacement - or both. It actually works because of the volume sales Amazon can generate. In my wife's Amazon business experience, the cost of this policy is minimal. Amazon also has a rule that if the product is faulty they bear the return delivery cost, if the customer simply does not want the item the customer pays the return delivery cost.
This should be the rule for all online sellers. It makes the concept of fixing things irrelevant. It is also why I buy just about everything, including electronics, on Amazon.
Wilson, Devialet, Innuos, Puritan, Claro