They might have made it for your server, yes. But that does not give you the rights to take it and sell it furthere without us having clear proof that you are allowed to. I doubt that anyone wants to buy this without solid proof.This map was made for me and my server. Only they and I have this map. If I own this map, I have the right to sell it too. Thanks.
And I don't think the map is 300x300, and therefore you have invalid information, which means you are trying to trick/scam us. Look at this image: http://static.planetminecraft.com/files/resource_media/screenshot/1429/alamut67866017.jpgI really dont think you have the money..