Yeah the paywalls are there as a way to make it DMs only so for each post the buyer doesn't know if its a unique pic, she caught me and someone else leaking them this way and blocked us lol you might have seen about it on her twitter
Especially since you can circumvent those bans with a new account and VPN (if necessary). Understandable why they do it, of course, but ultimately it's pointless. Also doesn't stop them being traded between people in PMs or whatever.