Well, for 200k, I don't know, But, do the rune mysteries quest, mine an inventory full of rune ess, and sell it! go into a popular world in varrock, You'd be suprised on how much easy money you get! I got 700gp for 25 rune ess!
I am mainly in the Graphics and Artwork design forums. I love to make avys of pokemon so fell free to ask for one. credit to Rj fighter for chainsaw. people I admire: Rj fighter, Highroller, Sephirothdw4, Burnsey, Spyro Madgirl