It really varies depending on which part of the country you are in. I hear of guys back east picking good Marlins for $150.00+ on up. Here in the midwest they usually want as much if not more for a used junker than you get a new one for.
Not much traffic in 35 Rem. Marlins out here in Wyoming. About six years ago I bought one at a Gander Mountain store in Appleton, WI. It was $250, in good working order, but with shallow rust stains all over the bbl. Looks rough, shoots great.
If it's a 336A, it will indicate this on the barrel. Most 336 models will have some discriptive nomenclature such as "A", "SC" "CS" etc. Some do not, they simply have the model number "336" only. Not really sure why Marlin did this. I'm not not looking at any reference sources but I believe this model 336 was made in the 60's and 70's, does not include the cross bolt safety and is equal in value to any other comparable model.
I almost bought one a couple weeks ago for $225 OTD. I may go back and buy it yet.
At any rate, most any 336 you get will be a quality firearm and will offer many years of great shooting.
Well I paid $329 out the door for a used 336rc in 90% condition. It shoots Federal 200gr hi shoks in under and inch off the bench at 100yrds, 3 shot groups. In Kalifornia there arent many 35's so the price was right. I feel not one cent was waisted on that gun. I put a fixed 2X Weaver scope on it and we will go hog hunting in Aug. I'll post our pics when we get back. My brother is gonna bring his Marlin 336A 30-30 on the hunt so hopefully we'll get a pair of hogs with a pair of levers. So I guess I'm saying worth is realitive to a point. There may be some that laugh at me paying over 300 bucks on a used gun but I could care less it's my favorite gun.
Try gunbroker.com if you can't find one at a local pawn shop. I looked locally for months for a used 336 in .35 and finally gave up and found one on gunbroker pre safety 90-95% for $255. That price seems to be about the average with some less and some much more. I hope you find one. I wouldn't trade mine for anything.....although I would like to give it a companion in the form of a .35 ss i have heard rumored on this forum may be headed our way.
Last month, I paid $149 for a Marlin 336CS in .35 Rem. There are a couple of dings on the stock and a spot of surface rust on the barrel blue. The bore is in great shape and it's a good shooter. I put on a set of AO Ghost sights and an AO scope mount.
I bought some BB 220 grain for the fall Black Bear season.