
I have a dog from Spain here that was a Sp. Ch. Don't think I got the best deal as I only used him twice myself and paid for all of his health tests, shows etc and anyone else using him at stud the fee went back to his breeder.
Saying that he's a wonderful boy, produced me a lovely daughter and a numbr of people some very nice dogs and grand dogs! I don't regret it one second but I would ensure that you did it in a way that both you and the breeder/owner gets something out of it.
Would have been a better deal for me if my dogs would have normal size litters though LOL!