I have the same bow. In the box I got four bolts that were 17" long and were marked 2216 on the side. I was looking for bolts in Dicks and Bass Pro - nada, nothing.
Then I tried eBay. First time I went looking, I found 15 bolts (that were 17' and marked 2216) and got them for $45, making them 3 buck each. They are the exact same ones that came in the box with the bow.
So, I'd try eBay if I were you. Sometimes, you can get a deal.