Let's see. Last litter I bred had multiple titled dogs (AKC MH, NSTRA, Field Trials/NAVHDA) including hall of fame dogs on both sides.
Dam directly out of an extremely well known producer in the breed. Stud a generation or two removed from Hall of Fame dogs on both sides, studded out by a professional for a few years and then sold for $10,000.
My vet bill just for the delivery was over $1200.
It went up from there as the pups had to be hand fed.
Every 3-4 hours.
She had 11 pups. 7 Survived the birth, one died a few weeks later (after a lot of effort and a few hundred $$ of vet services itself).
I've known a number of folks who planned what appeared to me to be decent breedings where just a pup or two survived.
Things can go wrong, things do go wrong, and you have to plan and be capable of dealing with things going wrong.
It's no different than having a baby, except there isn't a welfare system to support bad dog breeding decisions. Lots of people can't afford a baby and/or are ill-prepared for it, so shouldn't even think about it. But they do it anyway. That some of those kids turn out OK in the end doesn't mean that we shouldn't advise people against it!