25k is awful deal for sasuke rinne. You could get his frags in the past for as low as 178/frag, so 17.8k value, and even his average is 240/frag (which is high due to his launch price of 300/frag for many events). Recently his average is closer to 200. Kakashi Summer has been as low as 193/frag, and an average of 203/frag. So, a good "bonus" if there are other things in the other events which are good deals and you want. Otherwise, if all you want are these ninja for reward, it is a bad deal.