I can explain how it goes here, and as much as I know, we are keeping with German club rules here to keep our GSD on the same level as in Germany.
First thing - not any GSD with greatest pedigree will grow into the breeding quality. Let's make one example.
You as a potential breeder buy the puppy. On top of usual routine like with other show dogs you must take him/her to training. Proper training, not just local OB classes. (There is no difference on training level for GSD showlines and working lines - both need reach high training level).
When your dog has grown up, got needed titles as a show dog (which is not cheap from the beginning anyway) he/she must past the training exams on said level (proper training takes not only money, it takes your time too).
So now you have show winner, with proper training certificate. And then, only then comes an expert from Germany for the final tests on your dog.
Exterior is one thing, temp test is another. Must past both to get breeding certificate. Some owners give up on training due the lack of time, some are not interested, and so on... At the end out of about 100 puppies born from club breedings only few reache the asked level, and out of these there are maybe one or two bitches only.
So it is a lot of job and a lot of risk that you will not reach the level to get breeding permission. As far as I know, here to get the breeding permission for GSD is the most expensive thing overall in comparison with other showline dogs, who all need show titles, but no training certificates.
So if you want a really good one, potential breeding dog, prices are about the same everywhere, and as I know, without a profit to the breeder. Top winners in Germany... ouch, prices then are much more than these that you mentioned.
It is costly, but I totally agree with the great job that Germans are doing on their showline dogs. So they are not going that way when the most beautiful but dumbiest or weak nerved can win, and produce new generation with weak nerved, dumb, stubborn pups.
Many breeds, former working dogs, put on the showline only list had gone that way and where they are now - beautiful dogs, but no working abilities. It happened here with collies - when I was growing up, they were most popular dogs, easy to train, very clever, strong nerves and so on... Greatest dogs from my childhood. They were showline dogs with the same training requirements as GSD now. Then it was decided to reduce training reguirements to zero, and here we are now - still beautiful but stubborn, silly, hard to train, and completely lost popularity - had not seen any for years, we have only few in this country now.
The other thing is how further breeding goes in your country - does your club keep the same policy to select the best dogs for breeding or it is going like import one GSD from Germany, probably one who would not pass the final tests at home, and then - let's breed? Then the price is too high, IMHO. But if all is done right, keeping up to German standard, then 2,500$ is just covering expenses of the breeder if that.