SanDisk Ultra 64GB ask me to format for GOPRO Hero 3 Black

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I have exactly the same issue I have tried several disk recovery programs with no luck,next is to send in to a data recovery company to try to retreive files. my gopro says no sd and my computer says that it is an unknown file system. i even downloaded a card formatter from sandisk and it does not recognize the card,it is a new card and i used it to video vacation I checked with a few data recovery companies and the best price was http://www.restoringdata.ca/ here in vancouver $250.00 if they can recover files and nothing if not. It is a lot of money but i really would like to have our vacation video