Price for a Certo Dolly Super Sport

[trittium]

I purchased one of these camera at a camera show several years ago. Mine is a pre-war version of this camera.

http://cgi.ebay.com/Certo-Super-Spo...goryZ710QQrdZ1QQssPageNameZWD1VQQcmdZViewItem

I know Photo Arsenal's prices are high, but is this a rare/valuable camera? The one I have has a different lens; a zeiss tessar 75mm f2.8.