There is also a reset button right next it. It resets your progress to RuneScape gold 0. You'll need to begin from floor 1. But, you'll receive the prestige bonus you received on floor1. This will cause you to increase your level higher than it should be. Here's an example of how I failed due to the level mod. Don't blame me.
As you can clearly observe, I was awarded an honorary bonus of 1145. This greatly raised my average spend. This is the floor 8. However, I think it's crucial to emphasize the clear. Duoing is generally an increased exp due to other bonuses. (When you are duo or trioing, don't suggest any more. Set the difficulty according to the amount of players you have.
This should help you guys to understand the significance of prestige. If you have any questions, suggestions or any other details about puzzles or bosses, feel free to post. I'll be glad to help you. Grand Exchange: F2p Runes Price.
Why is air/earth less expensive than mind/(body), runes of the Grand Exchange I'm sure of this. Earth runes (39 GBP), air runes (20 gp) and water runes (37) GBP) All are in fair supply and so command higher Grand Exchange prices. Fire runes (6 GBP), body and mind runes (5 and 5 gp), respectively, aren't wanted as much since their Grand Exchange pricing is comparatively lower.
You would believe that air runes would be comparatively cheap because (1) runecrafters can make the most powerful runes versus any other rune (increasing quantity of air runes), (2) air running is quite popular (again increasing supply of air runes), (3) most people would buy an air staff instead of an earth, water or fire staff (decreasing demand for cheap OSRS gold air runes). But, air runes (22gp) are more expensive than fire/mind/body ranes.