I just prised one at the local Yamaha dealer. 500 bucks. That doesn't include a petcock or gas cap. If you need a new tank try eBay and get an aftermarket one for half that price.
Sad but from what I heard she wanted nothing to do with Hollywood after that show ended. There was another chick from WKRP in Cincinnati that shunned Hollywood after the show ended. I also think she died.