1 Choose items with multiple uses. For instance, a yew log can yield experience
points for buyers who wish to stretch bows, or it can be utilized to create fires. Products with more flexible utilizes will usually be in demand.
2 Think about provide and demand. You would like to trade items that individuals can't access as effortlessly, but you also wish to avoid low supplies of rare items. Also, you would like products that everyone requirements, not only items to get a niche of highly-skilled players.
3 Pick an item that enables you to invest a significant quantity of capital. Because buy limits will only permit you to purchase a particular quantity of items per day, purchase something that's much more costly as opposed to a less expensive item. A 5 % return on 1,000GP isn't as higher as a 5% return on ten,000 GP. Just be sure not to spend all of your assets on 1 item.
4 Balance your patience using the item's volatility. If you want to buy and hold, pick
items that rise gradually in price. If you want to take a risk, buy an item that
fluctuates rapidly in cost. Just keep in mind that more volatility indicates both more
opportunity for wealth and more danger for loss.
See a lot more at http://www.live4mmo.com/guide/runescape-merchanting-guide.html