When he's an honest answer, please reply him orher in case you don't have any clue, make the effort to provide him a good answer, or do not post in any respect. NK17, the conventional response will be this: If you can invest 28 million OSRS gold on a skill, making you rich for the remainder of your RuneScape livelihood, everyone would do it and also make said skill/method less rewarding. For example: The more high level RuneCrafters, the greater supply, the reduced costs on Runes.
You will find several moneymaking methods that tend to be eternal: Covering the always-extreme source for specific products, such as raw material gathering, to killing monsters of various strengths for infrequent drops, and then finally playing the market by investing large sums of money to make bigger sums of cash. Of these, collecting raw materials is the cheapest but will require continuous work. It is profitable, but you are basically slaving away so other people reap the benefits.
Killing things is dangerous and has a variable of loss involved, but it's generally a hell of a lot more rewarding than collecting raw materials. It might, however, need private ability, more knowledge, high combat stats along with a group in some specific cases. Playing the market market demands knowledge, patience and a beginning lien of gold. Basically purchase things for cheap, then buy for a higher price. The idea is simple, and while you need to keep track of the industry often, it is probably the method that Buy 2107 runescape gold requires the least amount of"work", but it does need you to be patient, make the right choices rather than panic.