I like your thinking on starting one up - the business case is very compelling. But my question is really did you cancel your order with the sister because you assumed that the fact they shared records would result in you being denied both orders? That you would be put on some "blacklist"? Is it possible that they have created so many sisters to enable customers to get around the new refill restrictions the government is placing on them? It's easy to screw up your record keeping/sharing. Look at you business case again and think about it.