What you could do to find a more affordable leo, is contact as many breeders as you can. You did mention that you were interested in a somewhat older puppy because you have young children. Well, here is an idea:
Contact the breeders, and tell them you are interested in an older puppy or a retired breeding adult. A good responsible breeder will take back a puppy they have bred if the buyer can not keep them for whatever reason, and so there stands a decent chance some breeder out there may have an older return puppy, or a spayed ex-breeder female that is somewhere between 4-6 years old. Typically, these dogs cost much less to purchase than a brand new puppy and have some training in them. Most breeders at that point are just on the lookout for a really good permanent home for them.