I haven't been here very long, but I've recently taken notice that the prices for items and jutsu are pretty insane. I can understand that they have to be balanced due to the increased amount of ryo we receive for each post on most normal boards, which is 500. However, A C-Rank jutsu costs 100,000. That's 200 posts assuming you don't win money from an event or the Fortune Wheel. A B-Ranked weapon at it's maximum price would cost 2000 posts. Dat shit cray.
So, my suggestion is to balance them a bit more and lower the prices. It's just my opinion that those prizes are crazy, but there might be a method behind the madness. It's just my two cents though, thought I'd put out my opinion.