Yes its happened sumo, You need to ask to see the product before handing over your money. Dont buy / sell with people you dont know, your asking to get arrested or ripped off or both. I know people who have received / done things as far as blow up someones car, set property on fire, cars shot at with guns, houses looted of all valuables, car stereos stolen over ripping someone off a small amount of money or pot. Just ask to see the product first, then hand the dude the money and everyone is cool, if he wont do it that way and insists on being paid first to come back with your nugs, then find someone else.