I don't ask, but know my wife paid a Grand for our Poodle and $850 for our Shitso.
One of our favorite dogs was a yellow lab, bought from a neighbor for $50,
I really like dogs, we've had one or two for all but the first two months of our 52 year marriage.
Much nicer than some dumb old flea invested stray cat, well, wait, we've had two of those too.