Man, that’s a wide swing. Obviously the cost swings because some are mint and some are well-read. What is the significance of the 35 cent version?
Well I’m no expert but I’ve been getting more into buying comics recently and I’d say that it’s the quality is a big factor yes, but often it kinda just comes down to how certain places/people price them. A site like mycomicshop will give you a decent overview of how much the price shifts in regards to graded quality (https://www.mycomicshop.com/search?TID=178101) but even there you’ll see it’s not perfectly standardized. From my experience with in person shops, some just tend to be more expensive than others in general. For instance, I wouldn’t say the one I saw that was going for $150 was in significantly that much worse shape to be so much less than the one that was $400. And the one that I got on auction for cheap is pretty fine (which is just luck). So I’d just say it’s pretty random in general.
The 35c if I’m not mistaken is a rarer book and therefore much more valuable simply because they didn’t print as many of them (the normal price was 30c, and they were just testing out the 35c price).