Thanks for the input. Another question

What do you do about people who return something outside of the guaranteed time period? I don't think you could possibly enforce it in some way without risking bad word of mouth advertising from this person.
Is the customer always right?
I think you actually have to enforce it, otherwise you could have people bring goods back at any time. People like that would be the exception (unless there is a problem with the product in the first instance). You should have enough good testimonals to counter anything negative said by the type of person you are refering to.
The truth is you can't always please everyone