I think a great place to start would be here...
http://www.ytca.org/breeder3.html#NJ
Those are preferred breeders listed on the Yorkshire Terrier club of America site...I would try calling the ones in NJ even NY to see if they have any liters at the price you are looking for...You can also try local shelters..They sometimes get yorkies in
Good Luck!
Fran and Sammi