Any people can please tell me how come those Walter Woods amps can charge so much except they are all hand-made and make to order. What do they sounds? I really want to know . Because I have seen some used Walter Woods amps M-300 even costs 2000USD. I can get a brand new SWR SM-900 on this price range already. I would like to know some current Walter Woods users's comment as well. Thanks! Between, I always seen some Fodera Players use Walter Woods amp. Any "chemical reaction" between Fodera and Walter Foods?