If you care about folds, 30x40 is a nice alternative on older posters, especially since they're cheaper. I personally do not care about folds, as do many collectors, so 27x41 will always remain the format of choice, therefore making 30x40 a sub format collected by a minority and therefore much cheaper. I can proudly say that I do not own any 30x40. IMO, the extra white borders are extremely distracting.
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