DR Grordborts Fist edition Raygun

Hay Just wondering if anyone would have an idea on how much a first edition Dr Grordborts Ray gun would be worth? As in it was the first model to ever be released of a line of 400.

Any help would be awesome

Thanks

Have you tried Ebay?

Yeah nothing fist edition listed, like if its the first one ever produced one would think it would be worth a pretty penny...