Amount of items to buy

Hi,
I have been playing around with hikashop to see if i can use it for some of my customers and move them over to hikashop.
The question i have is as follows. If you have a wine distributor, that wants to sell per box (6 bottles). How can you do this.
What i have seen so far, is that i can put the price in per box, yet what they would probably want is on the product listing page to show the price per bottle (lower amount). I have tried to do minimum items set to 6, yet they can change that to 8 again for instance.
Is there a way to set a single price per bottle and that they order always per box of 6 bottles?

Love it. Simple solution.