BUELL XB INFO STARTER KIT
1-the SX is a CityX....which is a city-cross.....which is a first year 984cc model only......which is fairly rare....which is desirable.
2-look at the 4th and 5th VIN characters. if they read SX it is NOT a cityX model. if they read KX....it IS a cityX model.
3-cityx has a many unique desirable parts on it including headlight grill, hand guards, X-badging, SX decals, crossed-braced handlebars. if those items are missing which they usually are....value substantially decreased.
4-how many prior owners? how many miles accrued? how was it maintained and ridden? was it abused? does it presently have problems? has it been modified and if so who did the mods?
your virginal post would in essence require a book of answers to properly respond to. the above info i've provided will get you started.