I wouldnt worry about it the cops can not enter your home without a warrant and they cant get a warrant from you ordering anything that is legal to purchase. If they did decide to enter your house, they would be making a big mistake. And everything would be ruled out in court. Besides the cops/authorities would never know unless the place you get your fina from calls the police to tell them someone is buying a big quantity, but they still can not do anything. I wouldn't expect them ratting anyone out, and im sure most people make rather large orders when they have farms full of cows.