Before we begin, let's take a moment to learn the basics of the Grand Exchange. When you open the Exchange window, you will see six boxes with 2 boxes in each. One box is for buying, and the other for selling. You can pick the quantity and the price for either buying or selling. Usually when selling, the lowest price possible will be the fastest sell.

Let me show you an example. As you can see from the screenshot below, I have three barbed tail harpoons. They are set at the max price (27 gp) and the total gold is 81 gp. I could change the quantity and/or the price if I wanted to. However, I think that is fair, so I will press "Confirm Offer" and then I will wait for it to finish. They will hold your items or money until it's completed. You can always go to any bank and press "collect" to receive the money or items you got from the exchange.

Now, that you have a basic grasp of the way it works, lets move on to money-making.

Obviously the normal merchanting is always a great way to make money. However, who really wants to sit in a bank for an hour typing "Selling 1k willows!!"? That's what's great about the Exchange. Just take your items and put them in your sell box. Name the price and the quantity will automatically be the number you have. Most of the time it will sell within a minute of you putting it up. But of course, it's not always going to work like that. As in the screenshot below, I'm waiting for them to sell.

They will not sell as fast because they are not a popular item and they are at the max price.
If I had say, 100 Swordfish, and I put them at the minimum price, they would sell very fast.
Even if they were at the maximum price, they would sell quite fast. Remember, the more popular the item is, the faster it sells.

Another good idea is to buy low and sell high. Say I buy eight swordfish at 375gp each. Then I resell them for 415gp each. I just made 320gp. Sure, it's not a lot, but say I buy 1k Swordfish for 375k and then I resold for 415kGP. See the difference? Of course making money like this could take quite awhile. Just stay patient and it will pay off.

Using the Runescape Grand Exchange is a wonderful money making opportunity. You can have that Dragon Longsword you have been dreaming of in a matter of minutes.

Happy Selling!