Keep a close eye on the for sale ads here and elsewhere- many times people selling their bikes, after they have spent $$ on an OEM replacement seat, will want to put it back to OEM before selling, so you can get a good deal on a well-taken-care-of used one. Please make sure the seat you buy is made for the same year and model as yours- the early years in many cases will not accept a later year seat, even for the same model. Seats can be modified, but unless you have good skills you wouldn't want to do that mainly for clean fitment looks.
2003 1800C Black w/ H-K 3", PC III, Clearview w/s, Hondaline backrest, XM sat. radio, MB 12" shocks, Prog. fr. spgs., Wolo, SPyKER mod, Glen's gas cap, Paladins, Drag Specialties Popsicle pegs, K-N, blackened engine, Kury RTB, mirrors & r. boards, blue LED's, Rivco tach & risers, LeatherLyke bags, backrest bag, w/s tri-pouch, Gen. Altimax RT43, Mich. Cmdr. II, Ult. Lowrider, Showchrome grips. 12-18 VTXCafe Bike of the Month