The 336TS (by my guide) was a lever action 30-30 Win. made from 1983-87. 6 rd. tubular mag. 18.5 in micro-groove barrel and weighed in at 6.5 lbs. Had a Straight-grip American walnut stock, and (depending on condition) brings around $400. Hope this helps you.
Yes
Marlin
there is a marlin collectors site or gunbroker.com
1990
Not enough information given to answer this question.
30
1984
By including the serial number in your question,we will be able to answer when your Marlin model 336 was produced.
the cost 3030 cal 336sc
This would be best left to a qualified gunsmith to do.
Model variation
All depends on condition, model, accessories,...etc.