Get to a high enough level so you can be able to kill cows easy, I would recommend that you should do about 5+ damage and have a good health like 20+ cause that's what I have.
This might be a hard thing to do but, you will get 100 more gold pieces if you do it. You have to do the quest called “Prince Ali Rescue” because if you do you will be able to go through toll gates free. Talk to Hassan in the Warrior Castle, located in Al Kharid to start the quest.
Once your done the quest, you will be able to go through the gates onto the other side instead of going around if you want to make more money. Go attack cows which are north of where you get off on the other side of the gate. When you the cows are dead, you have to pick up there hides. Once your inventory is full, go through the gate again. Go to the bank and turn them into notes. Once you have about 100 (which should be about 4 trips) You take out all the notes and sell them for 100 gold pieces each. I've done this many times and I made about 300k in about 3 days. (school days)
So by attacking the cows you'll be able to level up your attack, strength, defense, and health, while making easy money. Once you are a such a high level from doing this you can buy full rune armor cause you probably will be stinking rich.
