Setting prices as high as you like and hoping that someone will be naive enough to purchase what you are offering is what's so fantastic about the free-market system. However, you might also set an absurdly low price in order to get rid of the item and absolve yourself of any liability in the unlikely event that something goes wrong after the transaction. The parent who purchased a children's suitcase from an online retailer is described in the story below. ahead of an anticipated family holida…