Yet, if you send me a photo of your Mom, enlarged for framing, whatever dimension is the same as I would charge for a map. I don't that photo of your Mom, I'm just printing it and charging your for the service. I print more than photos, but my daytime graphics and digital print studio - that's what I do for anyone else. So isn't printing maps the same thing?
Regarding size - I am allowing 18 x 24, especially for those using apps that require huge amounts of RAM they don't have to create them, if you want to submit an 18 x 24 inch map it is allowed. However, if you can create a 24 x 36 map then I would prefer that. That was the intention of the challenge. I want to create a nice prize, and an 18 x 24 print would only be half as good...
GP
PS: with Anna's maps (I have her permission) as the only exception, all maps on my site have permission from the publishers directly, and in most cases at no cost to me. The industry has been very open to the concept of Gamer Printshop and I work closely as I can with them. I'm not a sneaky guy trying to make a buck, I want to benefit the entire RPG community, if only in a small way.