It's a paywalled site. They're not tracking you other than to ask you to pay for the content. This will only become more common as sites shift from ad revenue to subscriptions.
I’m not too sure about that. There’s no guarantee they won’t both get your payment and then track you (with confirmed personal details you provided during payment).
Reminds me of this little piece of news from today. They are selling a small Spanish village using Wallapop, which is an app that could be considered a local version of Craigslist. The price: €90M