Is RFID still free?

I'm curious, is RFID technology still offered free of charge? It's been a while since I last looked into it, and I'm wondering if there have been any changes in terms of pricing or availability. With the advancements in technology and the rise of cryptocurrency, I'm wondering if RFID has adapted to these changes and if there are any new business models or partnerships that have emerged. Could you please provide an updated overview of the current status of RFID, including any potential costs associated with its use and any notable developments in the field?