Out of curiosity and because I don't know, does the money order offer you a greater level of security? Wether you send cash or a MO, if something were to happen are you not still out of your money? It's been a while since I've used a money order to buy anything, but I seem to recall that there is a small fee to purchase one (that's one of the reasons I just sent the cash). I also figured the vendor would have to bring the money order to the bank to make sure it's not a counterfeit, possibly leading to a delayed shipment. My purchase was just for a couple hundred bucks. If I was sending $500 or more, I guess I would go with a money order...but I still don't know why, lol.