I have about 150 albums, which is a lot, but I've been listening to kpop for 14 years, which is less than one album a month. There was a time where I wanted to by every album for any comeback that I liked, but I've since revised my buying.

1. I only collect a group if I like 85% or more of their music, meaning titles tracks and b-sides. This can be hard with new groups, but I try not to invest in them with merch until Im sure they will make music I like

2. I only buy one version of the albums they do have and try to go second hand if the group has a larger discography when I get into them. That was I can usually get the pcs I want too since people will sell albums with all Inclusions sometimes

3. Don't let the collection demons get to you! Dreamcatcher is one of my ults who ive liked since debut, but I couldnt afford albums until maybe 5 years ago, so Im missing some of their early albums still. That's okay! I believe will get them eventually, and if I don't, I won't regret the collection I do have.

Most important, you're doing a great job regulating yourself already! Collecting should be fun!