depends where; in France you can get unlimited SMS/MMS/calls, plus 350Go of data, for 20€/month [0]. it's surprising the market hasn't developed likewise in other (European) countries; I (genuinely) wonder why − perhaps legal issues of some sort?
edit: okay, sending MMS isn't always free, depends on the countries[1]. still free for USA, Europe, Canada, etc.
edit: okay, sending MMS isn't always free, depends on the countries[1]. still free for USA, Europe, Canada, etc.
[0]: https://mobile.free.fr/fiche-forfait-free
[1]: https://mobile.free.fr/docs/bt/tarifs.pdf