I was thinking about it for a long time, and there are still some groups that either only get 1 mini or 1 mini + 1 digital single per year. Some of them even get only 1 album version, and we all know that fans love photocards, they literally crave for them... So I was wondering why labels just can't release either seasonal or like half of year photocard sets? Let's say 10 or 15 USD for either individual expanded set for each member or one Photocard Box Set with let's say 3 photocards per member (or 2 if group has big number of members). As an example I will use here something a bit different but many people from Europe will recognize it right away. Football Panini Stickers. This actually give you a glimpse how it could work. Panini also sells album, it's like blank but has separate sections etc. later on kids are opening stickers and placing them in right spots in album. It's hella fun for kids believe me, I was doing it myself for all big competitions like Euro or World Cup. They now also made stickers and trading cards for Fifa PC/PSX/XBOX games. Now KPOP companies could use it in similar way but album will be nicely made, group themed, and inside will be like transparent with pouches, and sections. Or it could be like a book with some information and separate space to place photocards. Below you have some examples of multiple ways those cards could be sold. Let's be honest if someone is into photocards and for best he can find only 4 of them in one music album when he pays 15 USD for it then I believe that in this "waiting period/hiatus" between releases fans will love to buy those photocards, and it's great because there would be none royalties to pay songwriters, music producers etc. if company is smart then they can earn tons of money this way.