Obviously now they are not a big thing and all the treasure ninjas are quite far from the meta, but some of them have value especially with the SB.

Collecting them used to be a lot easier - for example we had them in Great Plates.

They seem quite overpriced now and also quite difficult to collect.

I suggest both - double prizes on events for seal scrools, e.g. - instead of 1 obtain 2 and reduce their price in sun coin shop in half at least. NO ONE BUYS THEM. for coupons anyway.