I want to order some books but the same version is available cheaper with a different date and isbn number?

they both look exactly the same and have the same covers,however one is dated 30th august 2007 and the other 6th october 2008.They also botth have different isbn numbers.They are manga books but can there realy be a huge difference in them?I want to save myself some money here thanks al|||There's probably absolutely no difference. They're just different editions, and one was apparently cheaper to print than the other one. If you're worried, see if you can find some reviews of the product, but it seems like it would be OK as long as you trust the book seller.|||If they are different it should have something on the cover of the book in the first few pages of the book that says something like "revised", "additional content", "edited", or something that would indicate that the book has been changed.