A heuristic for somewhat ethical subscriptions it's probably to decouple subscriptions from the calendar. Instead of $X/month, which must be paid even if using intensively, barely, or not at all the service, to have $X for Y amount of "no expiration date" minutes of service. Just want to try the service, pay $0.X for 10 minutes. Really like the service, pay $X++ for 1,000 minutes and not worry about it. Of course, th…
Edit: 1 eur per 10mb in the prepaid version vs 13.50 eur per month for 2gb plus other stuff like calls and sms. So I either have to waste money on stuff I don’t use every month or pay 15 times more for the same service