1. Skills: The higher level you have, the more money you can make in these areas. Mining, fishing and woodcutting are considered the big three moneymakers. However, there are people who find their fortunes in thieving. For example, in mining you can earn 13k for each reunite ore that you mine. For the woodcutter, magic logs worth 1k each. Fishermen can get up to 1k for each shark and if the thief can get his hands on blood runes, he can get at least 400 gp.
2. Treasure Hunting: Treasure hunting is actually a mini-game for members. There are three different levels of RS accounts, which yield different treasure possibilities. In level one, you can get gold trimmed, a black armor set worth 300k. In the second level, you can get ranger boots worth 700k. In the last level, you can get gold trimmed rune armor, god armor, gilded armor and a Robin Hood hat. Each of these items can be worth over one million gp. To enjoy more fun, you can buy runescape accounts on farmer100.
3. Dueling: By dueling you can make a fortune, or you can lose everything you have. It’s only worth the risk if you are absolutely certain that you won’t lose.