more expesive when you buy in bulk

I buy bulk boxes of canderel (1000's) as buying smaller ones is a waste of money. To my surprise I notice that you actually waste your money as +- 30% is either empty packets (sticks) that is still sealed but nothing inside. the other is laying in the box loos of the other sachets that's leaking or not sealed properly. <br> <br> this is so unfair