No I'm kidding, I don't have a patreon, but I don't want to give my favorite markets up.

Ebay has accounts and some rudimentary price discovery there.

You can also just message existing pages on IG. My primary procurement accounts are just anonymous blank accounts that just send out a direct message with an offer. Money talks.

Emailing is usually possible too.

The main thing you want is price discovery, understanding how things are priced or understanding value. Its some formula between followers and engagement. If I were to guess I'd say

(Followers/100) x (Engagement x 100 x 1.75)

Engagement is a percentage so it has to be by 100. Eh and the multiplier for engagement is probably nlogn. after 1, 2, and 3% engagement would have a large delta in prices between them, but 3+ wouldn't.