It depends on weather you make it yourself or have it made by an artisan. Also it depends on if you are doing it totally traditional or just trying to make it look authentic. As well as what your status in society would be. I have no way to put an exact price on it, but It would be between $50 to a few hundred for purchasing outfits at places like http://www.bestrenaissanceclothing.com . It is likely that you can make it yourself much cheaper in price but more expensive on your time. Any fabric store will have all kinds of patterns to choose from. If you know anyone who does a decent sewing job, you could buy the fabric and pattern you like best.