Nice balls. I would call the person you got the bp's from and ask if the dragon belongs to them. I would feel guilty about keeping something I didn't pay for, especially since they gave you a good deal on your pastel and you got such beautiful bee's. I have NO idea how expensive frilled dragons are but if they do go for over $100 I would bet the breeder (if it is his) would be willing to come and get it (or at least I would ).
What ever you decide good luck.