English shepherdess, German shepherd = person. The canine breed's name translates as German Shepherd Dog - GSD for short, not Gs.
Labradors & GSDs are not stubborn. They're intelligent enough to quickly work out whether it's worthwhile doing what a human wants.
So why should THAT Lab fetch things for YOU?
Your cost question cannot be answered. Decades ago our SPCA estimated that a GSD or Labrador sized pet would cost about $12,000 over its lifetime - most in the first year (purchase, fencing, kennelling & such as bowls, brushes & leads), vaccinations, going to weekly training classes) and final year (veterinary for geriatric problems, then euthanasia & disposal). At least double that, now.
What's saved on purchase price tends to be swallowed by extra vet.costs needed by poorly-bred pooches with no, or an inadequate, Guarantee from the breeder.
As Rolls Royce salesman state: "If you have to ask the cost, you can't afford it."
Most English-language KCs (Australia's ANKC is a rare exception) register as GSDs ANYTHING that has 2 registered-as-GSD parents - those 2 were registered as GSDs because their 4 parents were, and back until some genuine breed-worthy GSDs were ancestors. The only checks KCs in Britain, Canada, the USofA make are: (1) "Are both alleged-parents in the same breed's register?" (KC attitude: "The breeder signed that those are the parents, and no breeder would EVER lie to us.") and (2) "Has the right fee been paid?".
Compare that with the certificates, checks, qualifications, show gradings that breeders who register stock with the SV or responsible registries must have proof of for BOTH mating partners before they can register a litter: http://pets.groups.yahoo.com/group/The_GSD_Source/links/Defining_a_GSD_001261993982/
Work out how much time & money a breeder would spend during the 2-3 years needed to obtain all those certificates, and you start to see why real GSDs cost more than do "pure-bred GSDs".
And several "big breeders" in your country expect their dogs to support them financially (in my country, breeders go to work in order to pay for their hobby).
What does that have to do with a pet owner?
You might as well ask "What does a reliable paper trail from manufacturer to car sales-yard have to do with a person who just wants a car for getting to & from work plus shopping?" No-one uses an F1 racer for those, but all owners need to be sure that their vehicle (or dog) has a background that assures reliability, road-worthiness, and parts-support. Get an el-cheapo dunger and you endure problems.
The difference between a pet-owner and a competitor is merely attitude and needs. Pet-owners love their pets regardless of flaws in shape or coat or behaviour, whereas competitors quickly discard what they cannot win with. But both REQUIRE a calm, healthy pooch that strangers will instantly recognise as being the breed that it is.
Photos are not easy to see temperament & soundness in, but they do show structure - and structure that isn't suitable for a boundary-patrolling GSD is STRONG evidence that the breeder is breeding a deviation, not a proper GSD. http://www.leabashiba.com/fashion.vs.GSD.htm shows some GSDs and several deviations.
Your term "compound" bothers me.
Anyone wanting a pup from me needs:
• A door opening straight into a yard fenced to not only keep their pet home but to also keep stray dogs and stray brats OUT.
• A decision on all the activities he/she wants to be able to do at various stages of the pooch's life. (So I know what attributes their pup needs to have inherited.)
• A plan for where Pup sleeps that does NOT involve a chain or shut crate.
• Ability to collect Pup at 7-9 weeks old and STAY HOME 24/7 for at least a week (preferably fortnight) concentrating 100% on it. Partly to help Pup settle in & decide that this is a fun, safe place and you are the source of everything good. Mainly so YOU learn its signals & timing for such as "Wanna go toilet" and "Wanna BITE something!", so can predict & take immediate appropriate action. And YOU have to learn to be so attractive that Pup happily comes when called - preferably still carrying the precious thing you THOUGHT you had put somewhere safe (praise it for coming, swap the precious thing for an allowed toy, then play with Pup to make the toy precious to IT).
• Ability to feed no more than 9 hours apart until Pup is 5-6 months old.
• Determination to spend a year in a proper training club's weekly classes (forget pet-shop play-groups) starting when Pup is 18-22 weeks old. There YOU are coached to become an effective trainer (as you couldn't get a 6 months Labrador RETRIEVER to want to RETRIEVE for you, you obviously need a helluvalot of help! Most genuine Labs are retrieving such as a wing at 6 weeks old); at the same time Pup learns to pay attention regardless of what other dogs & people are doing.