You can do it for way less than 250 depending on what your bike is specced with in terms of parts...Ideally if you have a freehub and horizontal dropouts it will cost you about 25-30$
Pictures of the crankset and rearwheel area would be nice
edit: fixed will be more expensive than single speed
Last edited by The LT; 07-08-08 at 05:53 PM.