I'm posting this here since I'm curious and also trying to compile a collection for doubleP.
Their back numbers total 48 months, which (if you want the differences for higher quality) totals 24,000 yen ($168.20 in US roughly). That's a lot of money! It doesn't help that their Patreon has previous posts for like $20-$45 each (which is insane).
I've seen a doubleP collection posted here, and it helps a little bit, but it'd be nice if anyone could contribute. Whatever anyone has in the highest quality helps, since I'm going to sift through all their 130 posts and sort and date the highest quality into a collection. Thanks!
Edit:
I realized that there are some differences locked behind 1000 yen back numbers, which I will sift through later.
https://mypikpak.com/s/VOS3Y_0L4Sm_lYnNcHzoQZOzo2
If it's organized like this, it'll be me