The price is a bit high, but you didn't give some relevant information. If the gun is a 24" bbl 336A, and in pristine condition then the price becomes better. What make is the Reciever sight. If it's a Lyman, then the price goes up some more.
Like another posted stated, the .35Rem is a lot more cartridge than the .44mag at ranges over 50yds. If you reload, the .35 is no more costly to reload than the .30/30, and is substantially more gun. At ranges of 150yds and less, I consider my .35 to be more gun than the .30/06 (I killed my first deer in Alabama with a .30/06 in 1976).
I have a soft spot for the .35 as my "mentor" who set the fire in me to hunt and shoot which led me to my career used a Marlin 336 in .35 with a Weaver 3x scope his entire life to hunt, and was a highly successful deer and turkey hunter long before it was popular throughout Alabama the way it is today. He hunted the Talladega Nat. Forrest between Sylacauga and Anniston before the deer restoration efforts of the 40's, 50's, and early 60's.
Check out the Marlin again, it may be something of a collectors item, and someone here may want to "snatch it up" even if you aren't interested.
Otherwise, it seems to be overpriced. A good average .35 with a cheap scope will bring $250-275.00 in your area.
Properly sighted in (2.5" high at 100yds), the .35 is easily capable of "point blank" shooting of deer to 200yds (-4.0" at 200yds.
Much flatter shooting than the .44mag.!