$0.10 per head; $50 minium. We appologize for any inconvience, but when you add this item to your cart, the drop-down only lets you select up to ten. Select any number you want and add it to your cart. Once in the cart, you can manually type the amount you need in the box and then hit the + button next to the box and it will update your number. Sorry for any confusion. Call Sierra if you have any trouble doing this.