St. Patrick's Mystery Boxes: purchase or not?

After almost 3 yrs of playing, I have learned that most things get offered again at a discount if u wait patiently and keep an eye on this forum. If anything good is offered or comes back (like Kumiko), there will be excited chatters here :)
Still on the fences about purchasing the boxes. I may try a few to see if I can get Notre Dame/Seamus, and leave the rest until the next offer.
Thanks for the inputs y'all. :) ...off to sell my KEMs...my contribution to Spring cleaning.