That is weird- they probably expect you to re-use the bags, I guess. I got even numbers of each- 20 bags and 20 wafers. What I don't know is how long that is supposed to last? I will be calling the supplier soon to re- order and ask how long those are supposed to last. I change bags and wafers every 3-4 days.
I sure hope I don't have to pay out of pocket- that stuff is expensive