Well... that's nice. You don't have enough fame and need more. You get fame by doing quests. There isn't some magical insta-fame fairy that everyone else knows about that will take your 1.5k and turn it into overnight hero fame. You asked for cheap and easy. The Selbina quest is both. Most quests are one or the other. But if the ones people have mentioned aren't good enough, feel free to
look some others up.