How much does rune essence cost and how should I sell it to make a profit

The Grand Exchange is the best place to sell any item on RuneScape. It's useable by both members and F2P. Rune Essence varies in price and changes frequently. Pure essence, which is the essence mined by M2P, is more expensive.

Rune Essence has been running around 70GP each on the G.E.

Pure Essence has been running around 217GP each on the G.E.