There are currently 25 active listings in Yankeetown, ranging in price from $99,900 to $1,150,000. Only five of those listings are under $200K. The lowest list price is $99,900 for a two bedroom/one bath home with 836 square feet (MLS #318540).
You MAY be able to find a manufactured home elsewhere in Levy or Dixie County for under $50K. Try this link:
Just enter the specifics of what you are looking for. The interface is not pretty, but it is very accurate. This site will show MLS listed properties for the entire state of Florida.
Best wishes and happy hunting!