Actually they say it's worth $7950. The $8200 value is with taxes & titling added in.
Nevertheless, I've asked them what the basis was for them to total the VX but they haven't responded yet. In VA if the repair estimate is in excess of 75% of the value of the vehicle before damage, then it is required to be totalled. The estimate provided to my insurance company is significantly below that amount (about $750 below).