Gotta be wary of comics and magazine sales where no description is given when a book is listed in any particular condition (a VF/NM gets a pass from me, but that's pretty much it). Too many variables.
It sounds like what he listed was in the condition promised; he simply didn't elaborate on WHY it was only in "good" condition. I pass on these buys, or message the seller for elaboration before I buy, but folks that don't deal in comics/magazines probably look at "good condition" a LOT differently than an experienced fan would.
Personally, I think it's kind of a sneaky way of doing business. There are some sellers (and one in particular that has a store and thousands of followers) who "hide" (whether on purpose or not) the details of the description by sandwiching those details in smaller writing than the rest of the listing. Again, I think this somewhat underhanded, even if the description IS there.
I spell out all the flaws I see in a comic when I list it, any and all, for the reason you're having issues with this seller. It's much too big a hassle, and too big a risk for me, if a buyer doesn't get what they're expecting. I also recommend a buyer or bidder ask questions, voice concerns, or request additional scans of a book before buying or bidding, because I'm not a professional comics grader, and I don't offer refunds (though I've gone extra lengths to satisfy a customer; part of doing business).
If this seller offers returns, return it. If he doesn't, I think the best you can do is make your concerns known in the rating. Not sure the seller deserves a negative (I'd rate a neutral, personally), but that's your call. After all, in my opinion, he graded the book correctly.
I hope it all works out in your favor.
