Board Thread:General Discussion/@comment-27609365-20160120215831/@comment-25386610-20160121002252

Were the treasures bought during Higher chance of S Rank or just on a normal day without the event? That might play a big part. But as for 50% less during this season, you might have to take into account other treasures being added and noncrystal treasures also being retired. A lot of complicated math but if someone can look into the CR files and check the chance of getting crystal treasures, the math can be done. But you're right it's harder to get the treasures this season.