How a gsd can be managed in under 1500 a month escapes me, assuming its diet will be meat based.
As runni has highlighted the initial expense of vaccinations suppliemnts, chewing toys leashes (they r capable of destroying nylon leashes amongst other objects) is on the higher end.
I have a rotty pup, she eats beef, chicken, eggs sometimes mutton (human grade meat) so thats like 400 a week (but sometimes goes upto 700) and commercial food r only more expensive. Oh and she also has curds sometimes.
Suppliment tablets r cheap.
I hear a dog can thrive on a veg diet, but its very hard to believe. Would I get a goat and raise it on a fish based diet? no coz thats not its natural food.. bad example i agree but u see the context i hope.