There are a bunch of prepubs I'm trying to order, and every time I click Preorder to add one to my cart, it empties whatever other one was in my cart before. I can't go back to shop more. If I click back on the "Products" tab and find another one to order, I end up emptying my cart again. There's no "Shop more" button for ordering prepubs like there is with the normal Cart. The prepub Cart seems to be a completely different beast (my regular Cart kept its contents in it just fine while I've been battling with the prepub one). This is very frustrating! I don't want to have to go through the whole ordering process for each of what could end up being a dozen books by the time I'm done. Please allow us to order multiple prepubs at a time.
Thanks!