HI,

This is apparently made for those p2w players, who already used all necessary advanced refine runes and BT pills, thus maxed that part of equipment, and now they need Epic runes for further progressing.

Also, all items in this rebate are possible to gain during week in different places, while BT pills (and fragments) are not.

All this is most likely because of some p2w plaers who complained about this, same as when they nerfed Zetsu. ("Money makes the world turn", I guess) :)

Have a nice day, everyone!