Free: Contests & Raffles.
I would suggest going on gunbroker.com or auctionarms.com and finding comparables for the rifle that you have..
Go look in the Cabelas in Lacey and see what they're asking for their used rifles. I was in their the other day and I couldn't believe the high prices! Guns must have dramatically increased in value in the last few years. I just couldn't believe what they were asking for old beat up rifles. From the prices I saw there, just guessing but I'd say your rifle, without the scope should be worth at least $500. You might also bring it in and ask how much they'd give you in trade.
Keep it. They don't make that gun any more and it's the best '06 made. Pass it on to your kids some day. Guns like that should stay in the family and passed on to family.
i'm thinking that the only ones that are worth a whole lot are the ones that came with the Pre-64 action am i correct?