Looks like a very nice one. I've bought more than a dozen Russian cameras in the last couple weeks. Suggesting you can buy lots of Zorki 4's on ebay for half $56 US dollars is surely not my experience. I have the bid on one right now for $49 plus shipping and think if I get it it will be a bargain. I have not paid less than $25 for any of the dozen cameras I've bought on ebay. Maybe I'm missing something or have come along at the wrong time.
I will say when I see suggestions that folks are paying way too much for something those suggestions are probably coming from folks who wouldn't sell such a piece for that little themselves.
Further I will tell you Yuri will charge you at least twice that much for a Zorki 4 in similar shape. I have two Russian cameras I have ordered from him that he is having checked out right now and I will tell you they are not close to that price. Go to his site and look at his prices. Spend a good bit of time on ebay now and see what these cameras are really going for. I can guarantee you, I will pay $56 for that camera right now, In fact, based on what I've been paying I might go double if the shipping isn't too high for one like that. Based on my short experience, the Zorki 4 is just a wonderful camera. How much is a wonderful camera, not to mention a piece of photography's heritage really worth. You'll know what it is worth to me if you read my post here.
Am I just another stupid American, with too much money, probably, there are lots of us who are driving prices up, I guess. Here is my thinking in that regard.There are a lot of folks in the Ukraine and Russia right how who are working their a$$es off trying to make some decent money on cameras they have taken the time to dig up and present well in ebay auctions. I have received six of them so far. None of them is perfect but all of them are able shooters. Most of them look quite nice, nearly as nice as that one. Some of them cost twice as much as that one, most pretty close to that price.
I say if that is the camera of your dreams you are crazy not to jump on it. Even if you got one for half that price, as the poster above suggests, you haven't saved any money to amount to anything. Is your pleasure worth $25 extra dollars, mine surely is.