Yep. It's available. But it's not cheap. Gunbroker is your best bet. Easy to get there, but you'll pay $$.
Then it'll ship to your door. I agree, it's worth it to be able to hunt. Order two boxes. That will give you enough to sight in and still have enough for your hunt and whatever hunts you have this fall. When the prices (hopefully) go back to normal then stock up so you never end up in this position again.
-Jake