I guess If you find an all original NOS fatboy, it will be more expensive than a restored one.
Since old razors suffer from use and platings ware off, settings not up to spec any more among other maladies, then a restored vintage razor finished to as new condition will command a higher price than a fair condition original. It's up to you to decide which kind is for you. For myself, I have some vintage razors including two fatboys and two slims and I can attest to the fact that they all shave differently due to maybe wrong settings. The resored item is as close to as new condition as you can get without buying a NOS.