For shops there is the greatly convenient "Quick Stock" option which not only allows you to mass stock your store, but also put items into your wardrobe, vault, or armory; donate them; delete them; or just keep them.
But ya know what would be absolutely great?
A way to put your collectibles into your collections all at once in a similar way as the Quick Stock. Imagine the time it would save everyone! Maybe if there could be another column added to the Quick Stock that says "Add to Collection" then that would put any beanbag, plushie, trading card, etc. that you select into your collection. I think this would be a great advancement for Subeta that everyone would enjoy!
P.S. Has someone else already mentioned this before? I haven;t heard any talk of it so I thought I'd throw it out there
Staff said no to this like a billion times.
Yeah, it's been shot down soooo many times in the past. According to aka the site owner, you're supposed to "work" for collections. So, unfortunately, that means adding them all one by one.

Huh, that's interesting. I mean, the prices we have to pay for some of these items in the first place already is "work" enough I'd think but I guess not...