You have these special purchases for scents. You only allow the purchase of 1 at a time, which can be annoying if you want to buy many more.
Usually, they are in some rotation with some other purchases, so to buy multiple scents, it takes a very long time. It goes click buy 1, click buy 1. click buy 1. Then it rotates out, and I have to bring it back, to rinse and repeat.
Perhaps you could add a feature of buy 5 and get 1 free or buy 10 and get 1 free?
At least don’t make it so that if we want to buy large amounts, we have to constantly do a tap dance on our phone