I'm not sure where you are in the world, but in the USA Amazon still appears to be selling the D800e. They even have a 2% cash back offer. I just went on their site.
More to your questions: From what I have read, the D800 was more likely to have to focus issue. Thom Hogan has written about this, I believe. Somewhere I read the thought was the D800e might have had more rigorous QC. In any case from what I have also read, the focus issue is mostly addressed in fresh stock cameras that are arriving in the USA. What other issues are you concerned about? I don't know of anything else significant.