I don't think a Stevens would be worth any more than a Savage. They both came out of the same factory at that time. I have an old Stevens 94 single shot shotgun in 16 gauge with a tenite stock, great atv gun, you don't worry about marring the stock. Yours is in pretty nice condition for it's age, don't think I'd use it for hunting personally.
In the U.S. there may be more Stevens collectors but I don't know if they are interested in Stevens guns built after Savage bought them out. Stevens was basically an economy grade Savage, didn't even serial number them. I see you've got the stupid serial sticky from the CFC, really adds to the looks of an old gun, doesn't it?