dpd1 - 6:08 am on Jul 1, 2013 (gmt 0)
For me, I always take into consideration who the person is. Is it a nut that will dedicate their life to trying to ruin you, or just some random person you will never hear from again... If it's more like #1, maybe just chalk it up and move on. If more like #2, then just send them back. But in general, I usually take into consideration how it will affect me overall, as opposed to just the money. Sometimes it's better to just chalk it up, rather than waste your time getting in a long, drawn out battle with somebody.