gunbroker.com and gunsamerica.com are two large online listings of thousands of guns for sale, and there are others as well. Peruse the ads and you will find asking prices for both new and used guns of all makes, models, and calibers. It's a pretty good bet that a reasonable "market price" can be determined from there.
Contact Savage Customer Service through their website and see if there is an owner's manual available. They are usually free.
On line auctions
No known web site.
You will have to specify which firearm you are interested in.
Gun Broker, Auction Arms, American Arms
http://www.vintagecardprices.com/free-basketball-card-prices.htm This page publishes free values daily for past sales transactions on eBay in the past week, month and all time.
Take a sturdy folder and make random holes and angles in it, take the colors you and to paint the rifle with and paint it.
it was for free
Go to the website of the MAKER of your rifle (Hawken is a style, not a brand). You should find an owner's manual you can download, or request a paper copy for free.
http://www.e-gunparts.com/productschem.asp?chrMasterModel=0860z788
Go to ConservativeStream.com they have free MP3s for everydays' show. I've looked far and wide for free Savage podcasts/downloads and found this to be the best link: http://conservativereview.us/
The same as you would any other rifle.