I am not an expert, not by a long-shot. But from what I have seen on the web most decent suspension forks will run you $500 and up. Not cheap by any measure. From what I have read also what you buy should also depend on how much you weigh. Me, I fluctuate between 200 to 220, and I hear that for my weigh it is best to stick with coil sprung forks, as opposed to air. So there are a lot of different factors you need to put in to play when making this kind of decision.