Hmm haha that might still be better plus a yen is cheaper
. The collecting part would resulting in a rabbit hole haha , but as a causal collection its still pretty cool xD
Collection base on my knowledge lol uhm comes down to :
signed albums are the most valuable (base on old to new) > to event signed poloroids / photo cards > concert limited pcs > comeback preview pc (kinda forgot what they called it where the selected few get to watch their comeback first hand before the official one - since these are kinda limited qty (i guess it varies based on different girl/boy band groups)) > POBs > regular album pcs. Then it comes to the members popularity the high demand member would go for higher $$ ->which its often called the member tax eg.
I will use Dreamcatcher's cases as a reference : my bias JiU is also the most popular one, usually i used a GOM (group order master as its cheaper & to secure the pcs lol) most that go down the rabbit hole will source for GoMs.
eg a comeback and then i want to get her POB i would have to buy a album but it gives a random one so i will head to a GoM and join their group order. Then because JiU is popular so i would need to claim another 2 members eg JiU + Member A + Member B to secure my JiU's pob. (which results in buying 3 albums the other 2 are called JiU Tax (aka popular member's tax) The tax varies its based on how the GoM rules.
Hope it makes sense haha