It's really a mystery for me how he got his subscription without noticing it. By default I trust people's good faith but this time I'm really wondering whether

It's really a mystery for me how he got his subscription without noticing it. By default I trust people's good faith but this time I'm really wondering whether he was really surprised, or if he knew what he was doing but feigned it for Internet fame. I have an HP printer, I use Instant Ink because I chose to. By default it just works like a regular printer, you buy cartridges and there is no subscription to pay.