I can attest to how much start up costs. I am just getting started and have invested over $5000 now and we have yet to go to a single show. It's all been in purchasing the puppy, buying equipment, vet fees, training classes, etc. it is not cheap if done right.
breeding is different for sledding dogs. Is cheaper to do then for show or pet. You may only breed 1-3 times a year unless your dogs are super great that mushers want.