Resources that visualize map sizing proportions?

Are there any public images/resources out there that show map size proportions?

E.G. If I want to know how big a map 1024x1024 would be, how would I look at that from an overheard perspective, and furthermore, how could I share that visualization with people who have virtually no experience in development?

Context: I run a company that takes commissions from project managers, and I’m looking for feedback from the community on how to visualize the pricing based on map size & quality, and how to visualize that (preferably in image form) for potential clients.