What is the value of this vintage Leica I camera?

A reader of this blog is selling this vintage Leica camera and would like to know what will be its retail value today. The serial number 33068 indicates that this is a Leica I model that was produced in 1930. Here is a quote from Wikipedia:

“Leica I — was first introduced to the market at the 1925 spring fair in Leipzig, based on the Ur-Leica prototype developed by Barnack in 1913 and the Prototyp 1 developed in 1923. Followed by LeicaLuxur and LeicaCompur (a total of 60,586 of the Leica I, Luxur and Compur models were made). Interchangeable lenses for these were introduced in 1930.”

On eBay Leica I cameras are listed for $1,000 to $35,000. For more information, please contact the seller directly at gabor[dot]jel[at]gmail[dot]com or just leave a comment to this post with you value estimation.

More pictures of the camera after the break: