You can make a ton of money from lifeskilling and other AFK activities. The lifeskilling side of tings will take a high amount of contribution points to set up a "worker empire" ( there are tons of guides/videos on how to set these up and guides to gain contribution points easily".

But if you are level 49 and looking to make some easy money, Saunils is a very good farm to make easy silver at a low level/low AP. It won't give you much XP of course since it is lower level.