Azért néhány csőnek elég ezoterikus ára van ;

http://www.ebay.de/itm/RV2300-Telefunken-Transmitting-Triode-Tube-Senderohren-RV230-Klangfilm-WoodFrame-/272224938053?hash=item3f61dee845:g:UOEAAOSw0JpV7G2r

http://www.ebay.de/itm/NOS-1950s-Western-Electric-300B-Double-Cup-Getter-Tube-Rohre-Foil-tube-Rohre-/301835609541?hash=item4646cde5c5:g:B64AAOSw5IJWgWAa