RuneCoins

Runecoins are type of RuneScape currency bought by microtransaction, used to buy cosmetic items in Solomon's General Store. They were released on July 17 2012.

They can be obtained in three ways, when you first visit the store you can get 200 runecoins for free. But afterwards you have to pay real world currencies to get more. You can also get coins from the Squeal of Fortune, the amount however is unknown at the time

Items you can buy from Solomon's General Store include cosmetic outfits, titles, achievement banners, new animations for fishing and woodcutting, some unique emotes, headbutt mining animation, and teleportation animations.