You've worked it out yourself, but you can't make up your mind to handle this matter by yourself. You have to eat on the opposite side by the joining fee, and the back covers are still one by one. This is joining. When you are lazy in the back, it's very bad for you from a legal point of view. The joining fee of 22 equipment in a dairy shop is high enough. It's up to the customer to decide whether to sell more or less, not what he says. If so, I might as well open a milk myself.