there were always 2 problems with this event- 1st is that it's heavily redeemable dependant and 2nd is that it requires you to invest in batches of 700coupons. Paper value of items you get from tailed beast images is nice, but it doesn't neccessarily translate into noticeable gains- you get charms, adv threads, seals, mangatamas, tactics, myoboku, refines and mood scrolls. Im not diminishing it's value, however it's not enough to provide a significant change when you aim at certain rebate, because you get a bit of everything - kind of like lucky board - however in LB's case you have a solid power option (charms). It's like Garv said, while aiming for a rebate (and most of us are hoarding items and sometimes buying a little more when we are little off of certain checkpoint) we are better off buying a cave key pack, seal pack, thread/refine/whatever. If that event received some love in terms of higher quality power redeemables or less accessible things (adv refines, adv threads, optional tactics, seal scrolls) it would be actually good. Personally, everytime it's up I'd like to spend in that event but there are no redeemables to make it appealing for me.