My wife and I have both worked retail and, while this may sound pessimistic, people will steal ANYTHING. My wife used to own a video game shop and she had a Sega CDX connected to a TV she used for testing games. This system was basically a Sega Genesis and Sega CD all in one small unit. A customer quickly grabbed the unit and dropped it into her purse and left. Didn't take the cables/power supply... And while I was working for RS we had a big display where you could try different speakers/car stereos to see what they sounded like. Some of the units didn't have the face plates to bolt into, so we chained them down and connected them. Someone patiently unchained one of the stereos and walked out while we were working with someone else. It's amazing sometimes.