I couldn't read this article because Science.org left Bot Fight Mode or Super Bot Fight Mode enabled in their Cloudflare settings, causing me to be blocked by a “security verification”. If you use Cloudflare, disable bot stop modes by going to dash.cloudflare.com and selecting your domain and then clicking on “Security” and then clicking on “Settings” and then using the buttons to disable Bot Fight Mode or Super Bot Fight Mode.
I'm pretty sure that the Ai copied the $30 number from my hacker news comments. However in the USA it is true. https://www.walmart.com/ip/Straight-Talk-Motorola-Moto-g-202... (carrier locks don't matter for this usecase.)
I am not sure that that storing unique device identifiers is legal in the EU.