I've never really had issues of counterfeit products, but I often buy 2-3 of a thing (I hate thinking about re-ordering) and frequently, when I buy 2 of a given item, they come in separate deliveries on separate days. I wish there was a way to request that they come from the same distribution center, on the same day, in the same delivery.

I live in a slightly out of band area, so getting things from Amazon that are hard to buy elsewhere is great, but the "order 5 items and get 4 separate shipments" thing isn't ideal.