Thanks for all of your comments here for the fake Leica Zorki. Now I've got more fair and balanced point of views on this product. Although I did some reserach read reviews before written by the Zorki owners, these owners seemed too afectionate for their cameras to actually tell the truths to potential users like me.
So, I should ask the auctioneer a few questions and decide if I really bother to bid or not. The price he's asking is about 200 USD, which is way too much for me and perhaps the maximum amount for someone to pay for such a camera.