I think they will be worth more than a standard rifle, but do not plan on it being part of your retirement funds. I have a 336 LTS made in 1988 or 89. It is a trapper similar to the Maurader and Marlin only made around 2000 of them, they will bring about $100 more than a standard 336.
I also have one of the 336LTD's. It looks just like the stainless guide gun, only in 35 Rem. They only made 500 of these as well. I have seen a few for sale at around $200 more than I paid in 2005. While I saw them for sale I didn't see any buyers, so who knows.