The M00 (2000) Blacktail is like Steve says, a Black Iced (Teflon coated) M97 (1997) Whitetail. It obviously has the laser engraved/etched laminated stock as well.
Price could range quite a bit, depending on condition, and if the scope and rings are included. The front scope base looks to be rusty in the top pic, but that could also be the camera?
Are you selling or buying? That will also make a difference in the price. If you're selling, you know the condition, if your buying you hope the seller honestly let's you know the condition.