Had an experience with a played named vibe-x where he was unable to list his completed atlases for sale correctly and I was unable to purchase them.
On the tab that shows what the shop stand is selling it looked like a blank atlas but the inventory contained the completed atlas. Trying to buy a completed atlas resulted in ‘not enough coin’. I believe vibe-x was attempting to list the -completed- atlas for sale multiple times but only showed the blank one for sale (though visually you saw the completed atlas as that is what the inventory contained).
Manual trading player to player worked.