* Make and Model: A 1949 Cadillac will cost significantly more than a 1949 Ford or Chevrolet. Rarity also plays a huge role.
* Condition: A fully restored, concours-winning car will command a much higher price than a project car needing extensive work, or even a "driver" in good but not perfect condition. Rust is a major factor affecting value.
* Completeness: A car with all its original parts will be worth more than one with missing components.
* Location: Prices can vary based on geographic location and market demand.
Therefore, there's no single answer. You could find a 1949 car for sale anywhere from a few thousand dollars (for a project car in rough shape) to well over $100,000 (for a fully restored, highly desirable model). To get a more accurate price estimate, you'd need to specify the make, model, and condition of the car you're interested in and check online resources like classic car valuation websites and auction sites.