How much for an authentic signed Green Bay Packer Jersey?

If it's signed sell it for a good 450. Authentic jerseys are 250 bucks then the signing is worth double the original maybe even more. Go to a sport shop in the mall that sells signed jerseys see if they'll take it. If not try craigslist. Im sure if you put it in the Wisconsin section many people would want it. You'll be surprised what people will offer too.