Yeah? With it being free, you shouldn't feel like you have to play a lot for it to be "worth it"
Early in the beta we leveled (me and a friend) 1-50, with 1-25 being a duo and about 70% of 25-50 being in somewhat of a set group within less than 5 days /played, all whilst exploring and reporting bugs and whatnot. That said, played time required to max level could easily be several multiples of that if is your first time playing the game/intent on completely soloing (which for leveling is quite a bad idea ^^)