Why the heck are you spreading around top secret trick like that? No one answer you, innit? Stop! And it's not that overpowered because you dont have that much beer/booze (8 each time to be safe, or one of these days you are going to get caught, turn shopkeeper hostile). Shops are rare so its' a terrifying risk. And another side of it is: You can do it to Killian a few times before you are tired of disposing the loots from his store (taking a trek to Hub or Boneyard) As for the teleporting caps into safe... it's not so much bug as an unwanted feature. Nobody care about getting to those safes the second time. 1st time is a big bother already.