I found a used (obviously) 30a for sale at a local gun store here in San Antonio. It seems to be in great condition. 20" barrel with the full tube mag. They have it listed for $370. This seems a little steep for a 30a. From what I have researched, the 30a was the low end of the spectrum of the 336 made for places like Western Auto and KMart. Am I correct in my assessment of the price? You can look at the gun here:
http://www.durysguns.com/inventory/profile/marlin_30a_.30-30_win._used_gun_inv_119372/
http://www.durysguns.com/inventory/profile/marlin_30a_.30-30_win._used_gun_inv_119372/