Have a few of these and cannot find a consistent price range. Certain dates have a better price, but the same issue can be all over the board as to value.

A lot depends on, as you noted the particular issue….with cover art being a big determiner…..Wallas make excellent display items, so the classic Marine riding the dragon issue is more valuable, as well as the 1937 issues covering the soochow creek fighting. Early editions (1929-31) also can be collectible for rarity. Content boosts value….ie an article on the development of the soochow creek medal is a desirable issue to own. I have seen the dragon cover go for up to $ 125, but most others go for less $50, to as low as $20 as long as they are intact and the covers are clean.