In response to the second link I posted…

It is a little complicated, so let me explain.

Lady buys $106 worth of merchandise.  She has a coupon for $5 off purchases over $50.  Because she bought $106 worth of merchandise her coupon was worth 4.7% discount. 

She returns an item with an original cost of $17.96 and the clerk refunds her $17.12 because her discount was applied to the original cost the refund is refunded less the discount.

This one is simple for me to see, but because the woman is an attorney and comes from a family of attornies, she felt she could bully her way through the courts and get some money for believing she was short-changed.

If you received a discount on an item you cannot expect to return it for full price.