Why can't his relative in Prague not find a friend who is into dogs in general  plenty of time in advance? Best will be if he found a friend or get to know someone who is into GSDs. This is what I ask of them, but they may not eventually find such a friend of a friend.

There are two ways they can help I think.

First more basic is for me to get leads here and for them to present themsleves as locals and check the dog for good health and socialization.
Local contact among countrymen is always better and more revealling of any dishonesty, IMO.

Second more comprehesive is to for them to discuss the content of local sale publications with me and to seek leads locally. Why is this so impossible? He translates the content, much are abbreviations.  What is so complex about ads for GSDs? I'd like to know.

Someone who doesn't speak English well but knows the abbrevations can understand translated ads here in the USA, I believe, in reverse.

There will be someone who knows dogs in general. A dog's general health is not hard to observe. If a dog goes after a ball 10-15 times with gusto  it is healthy.

Most of the temperament is summarized in the title and scores,  with the noted exceptons which a person who know dogs in general can detect.

 "There will be someone who knows dogs in general. A dog's general health is not hard to observe. If a dog goes after a ball 10-15 times with gusto  it is healthy."

Sorry, but with that statement alone, you've revealed what little you actually know of dogs in general, and GSDs in particular.  In a breed that is affected--across the entire spectrum of bloodlines--with pancreatic insufficiency, heart defects and autoimmune disorders, watching a dog happily and energetically chase a ball for half an hour on a particular day is not going to reveal anything save for that the dog is having a good half an hour at that time on that day.  Injectable steroids such as dexamethasone can mask a plethora of ailments. 

Did you happen to read the thread a few months' back from a board member who is EXTREMELY experienced in importing dogs from the Slavic countries, in which she related that she'd been sold not one, but several dogs, that were found to be dysplastic when x-rayed here in the US despite having been advertised as being certifed as HD clear? Documentation had been supplied that appeared to confirm that certification, yet ultimately it turned out that the board member had been the victim of fraud.   

"Most of the temperament is summarized in the title and scores,  with the noted exceptons which a person who know dogs in general can detect."

The only thing that can be summarized in the titles and scores is possibly  the depth and quality of the dog's training...but anyone who's spent even a little time in the activity can tell you that sometimes the only thing a title or score tells you is that someone had enough capital to buy a title with respectable scores.

What is your purpose in buying a titled Czech import, anyway?  Hopefully, it's just for your own personal satisfaction...because this post, along with your post asking if all bitches in a household or kennel synchronize their estrus, illustrate that you are FAR from ready to dive into the Educated, Responsible Breeder pool.

As GSDPack has already noted, you clearly have your mind made up on this, so it's a waste of time to discuss this any further.  Good luck in your experiment.