The first Berkut kit is for sale. It was originally purchased by someone attempting to use it to obtain a PHD in aerospace engineering. Ultimately the person fell ill, and never started the kit. The owner recently passed away, and John Griffiths, a former employee of Berkut is helping to sell it for the family. I'm not selling it, but am mentioning it to help John. You may contact him by e-mail john.griffiths@comcast.net
John is also the author of the berkut assembly drawings. I purchased a (licensed legal) set from him to help improve on the original design of my Long-ez. They have proved invaluable. Fuel systems, split canopy latching mechanism and struts, duel controls... etc... etc...