Depending on the 3 characters that you made you can lvl with those. Its just not gonna be as fast without opening up your pockets. DK tank, (any other DD) and an iss will get you everywhere eventually with just exalted. The thing is, you will end up playing in certain areas much longer than someone who chose to spend a little. Getting into good dailies with someone will be a problem when they see the gear that you're rocking. But, its up to you really. In this game there are those who have spent very little and happen to luck into some good sellable items that they then turned into good gear. While others have spent a small fortune. Its a game, if you don't want to spend and don't find it enjoyable..move out smartly. If you wish to spend the time and spend a little here and there, thats cool to. Your choice.