Breeding dogs, done right, is a hobby. A very expensive one.
For example: I'm planning a litter, and puppies from this litter will sell for 1K and 2K.
Wow, sounds like a lot of money, huh? Well, don't count the dollar signs until you read the rest of the story....
Progesterone testing to make sure the timing is right $350.00
Collection fees for AI, plus shipping for the semen $500.00
Surgical implant $650.00
Whelpwise rental $500.00
This is before this litter is even conceived and on the ground. If a section is needed, add another thousand.
The breeder gets a puppy back. I am keeping 2 puppies. The stud dog owner is taking a puppy for the fee. So that is 4 puppies right off the top.
Then we can talk about what I spent showing this dog to her titles (approximately 5K), health testing that's been done (about $1000.00)
Let's leave all the crates, bowls, buckets, food, supplements, vet care, my van, and the 25K I'm spending building a kennel area in my new house out of it.
I could breed 2 litters a year for clear profit and it would take me DECADES to catch up what I've spent over the years.
Breeding PROPERLY, so that you can attempt to benefit your breed, is not cheap, nor easy.