Aside from private hobby breeders, there are Chinese Cresteds of all ages available from Breed Rescues.
A Breed Rescue is basically a non-profit charity that takes in dogs in need from a specific breed. Often they will help shelters that don't have the space/resources to care for the dogs. Rescues use foster programs to rehabilitate and care for their dogs until they can find them a 'forever home'.

If you want a specific breed of dog, but also would like to save a dog in need, breed rescues can help you do that! Here are some Chinese Crested Breed Rescues in the U.S: