Ok. So you get a bow 2/10 from the quest. The first time you recharge it it is 900K, then 720K, 540K, 360K, 180K, and then it stays at 180K. You can buy an infinite amount of crystal seeds from other players, I believe you can also kill Elves and get Crystal Seeds, they usually go for around 100K or more as the other person said. Hope I helped. Oh, you can also buy full bows from other players, I bought one for 750K once so it's rather a rip off.