I've noticed some people with shops full of lots of wearables from collections, the cash shop, the subeautique, and other high end items. I was wondering if any of these shop owners had made a guide or a list of tips for doing this somewhere? Thanks

I'm pretty sure the general rule is simply to buy low and sell as value grows, which tends to be a little bit of a gamble in some cases. Things from collections and cash shop I think generally go up after they retire, same with Subeautique. As for an actual guide, no, I've never seen one - but that doesn't mean there isn't one, as I personally don't generally look at what guides there may be.

Thanks. :)