It depends on the size. Different vendors also charge a little different, but I would think >$50 is a given for this pan.
East Coast Tinning is a well known shop for retinning: "Our retinning charge is $5.00 per measured inch and we charge a nominal fee for return shipping. "
It has a little app to estimate the cost. If you have a 10 inch fry pan with a 1 inch height, it estimates about $60.
Rocky Mountain Retinning is also the same prize range: “The cost of retinning copper cookware, which includes polishing, is $5.00 per inch. Larger items over an 18 inch total will be charged $8.00 per inch”
http://www.rockymountainretinning.com/retinning-and-polishing-of-copper-cookware.html
Of course, you can always try to do it on your own, especially you have numerous copper cookware.
