I want to buy zenit camera фото cнаипер

Cameras suitable for the Zenit фото cнаипер (Zenit Fotosnaiper/Zenith Photosniper) are usually very difficult to find as they're specially modified versions of normal Zenit SLR cameras which incorporate a special additinal shutter release button on the baseplate.

Photosniper versions are generally expensive but broken ones can be cheap. Regular Zenit SLR's are very cheap and often free on Yahoo FreeCycle but I've never yet seen a Photosniper version on there.

Ebay is a good place to look but normally they are sold as part of a complete Photosniper kit. If you do see a body only for sale then the Photosniper versions always have a letter "S" at the end of the name, so a Zenit E is a regular model and a Zenit ES has the modification which makes it a Photosniper SLR.

All Zenit SLR cameras are mechanically very simple and most do not have any complex electronics. This is good, because it means that you can buy a cheap broken Photosniper camera and a cheap regular Zenit SLR and swap the baseplate with the additional shutter button to a regular Zenit to convert it for Photosniper use, the modification usually involves drilling a few holes but it's not difficult.

Hope this helps you to find what you need.