I'm sure you can find whatever your looking for in the way of mongrels (mix breeds) at any shelter and included in the fee are shots, worming and/or spaying or neutering. Why anyone would pay to buy a mongrel unless it was from a shelter is beyond me.
So called pure bred dogs like cavapoos, cockapoos. dipsydoodles, snoodles, labradoodles etc. are all really mixed bred dogs and are not pure bred dogs. They cannot be registered with the American Kennel Club and should not be bred because the end result will not appear consistant with either of the parents. Mendal's law of genetics will prevail.
You should have gone to the Western Pennsylvania Kennel Association dog show this past weekend at the David Lawerence Convention Center if you wanted either a Cavalier King Charles Spaniel or a Toy Poodle, both excellent dogs for pet or show. The show had many reputable breeders of pure bred dogs from all over the country.
Save your money, don't buy from those who breed for only profit or mix breed and sell so called exotic breeds!