I suspect they "paid" simply by having an interesting enough story, giving free accomodation to the writer of the article, possibly other expenses included, and giving access to the founder.
It's not exactly a pure puff piece either. The writer (https://twitter.com/chaykak) puts in subtle clues that he regards it as a Ballardian dystopia, and has retweeted someone's description of his article as "The Talented Mr Ripley, but with digital nomads"
Too many people here have this ivory tower fantasy of writers sitting in their offices thinking great thoughts and coming up with ideas about their next article out of the aether.
Everyone who watched that movie felt a pang of longing to live that way; it's still selling the experience to the reader
It depends on the cost structure of the PR contract - it's quite likely they just provided services for free (and then paid for transport). Which isn't dissimilar to pretty much all PR work. Although when I used to do video game reviews a long time ago, the PR agency would actually had to prove ROI over the RRP of the review copy of the game (£40) sent out, rather than the unit cost (a few pence for the DVD + postage) - so the "cost" of the journalist visit might be booked at a much higher rate.
Traditionally, the value is based on the AVE (some agencies still use AVE...) vs perceived uplift in interest. When you should start worrying about integrity is when there are follow links in the article with some kind of explicit UTM tracking. Something getting increasingly pervasive with the digital PR/SEO side of things.
https://www.nytco.com/wp-content/uploads/sites/3/NYT_Ethical...