It's a matter of volume. It's a matter of sales. We're looking at it by the total sales we're doing at the end. We're focusing mainly on ourselves. Obviously we also have revenue from our membership. Overall, when you have that, it's part of the equation.
Regarding the balance, you need to work with vendors. Costco is tough but fair. We're there to shop for you if you're a member. The first job that our buyer has is to be able to shop as best as possible to build confidence in our membership. That's what we do. Sales are a huge factor. Without velocity, it's tough to get a better price, so that's what we're aiming for.