Welcome to YT--this can be a tricky place to learn your way around.
You may want to check the rules sticky at the top of this thread regarding guidelines for posting in this section--lots of helpful info there:
http://www.yorkietalk.com/forums/yor...ew-thread.html
"
We do not allow threads begging for free puppies or looking for puppies at extreme reduced costs. Yorkies are generally from $500 on up, with most being in the $1000 to $1500 range. Please do not post looking for Yorkies below $500. If your budget for a Yorkie does not allow for $500 or more, you may want to look into Yorkie rescues or adoptions of older Yorkies, as they may be better suited to your price range."
As it mentioned, rescue may be an option you want to pursue given your strict budget for a new little one. There is a rescue section here as well:
Yorkie Rescues & New Homes Needed - YorkieTalk.com Forums - Yorkshire Terrier Community
Good luck with finding your little one.