I am looking at buying a used Norco Rampage for $600. Is this a good deal? It has had a few upgrades...drivetrain (SRAM X-7), new handlebars/ stem, new tires (Holy Rollers), and a E-13 chain guide, and grips. Here is a pic of it. http://i25.photobucket.com/albums/c6...1/P1010061.jpg Im a noob so any help would be great.