Does anyone know where I can adopt a yorkie?

I have been wanting a yorkie so bad for a long time now... I would prefer if it was a female yorkie puppy. I live in San Bernardino county in southern california. I have been to every animal shelter and found nothing. If anyone is selling them please let me know, or if u know anyone that sells them. I dont have much money right now so all i can give is $300 if its more then that i can give payments... plz let me know asap! i live in ontario california