I have bought and sold roughly 100 sendero and vssf over the past 2 years. Without actually seeing it but taking my 80% to be the same as your 80% I would say anywhere from the $800 to $900 range (only reason not $1000 or more being the 80% factored in). It would just depend on the demand at the time. If it were 100% and never fired still in the box who knows possibly as much as $1500 to $1800. I just saw a used 25-06 sendero sf with a Leupold vx iii worth about $500 bring $2580 on gunbroker. I have a new 25-06 sendero sf with a new $600 conquest on top of it with a Jewell trigger installed and the bid only reached $1800 (good thing I put a reserve) the point of telling that is you never know what one may bring. I do feel that no reserve, penny start auctions attract the most attention if going the gunbroker route. I just could not let myself take that risk. But it always nice to give other forum members a chance first..