In Stock ballz change all the time. When the available ballz run out the product will tell you out of stock and may not be ordered from this page. Lower your quantity to see how many are left or go to the proper page and find the ball you want to order.
If you want your instock ballz to ship right away, do not order items that are custom made.
Likewise, do not order in stock ballz when ordering other ballz that have to wait in the queue unless you place to separate orders.