Since NP is doing such gangbuster business, a lot of their more popular items become unavailable VERY quickly. And due to their nature, they take a bit of time to get back in stock--and then out of stock again.
Any way you all can have an "E-mail me when available" feature for registered NP customers whenever something is out of stock?
You'd then know how many folk would potentially be purchasing the item, giving you a better handle on your orders/logistics.
Just a thought.