...So that means 30,000 points per copy of a 5* senki. Okay, that does sound more reasonable. It'd still be preferable to have the option to trade for individual copies, since I'm guessing that the 3* and 4* senki only come with 1 Luck at those prices.
Is there a listing of what those tasks for getting 5* rewards are? Are they in-game tasks, or are you referring to stuff like the current story mode challenge?