My art was given to him at 600dpi......! 60 bucks for an A4 size sheet chuck full.......
My bise art for the Havoc, some tiny ones for Glenn, lots for Charles, and for the museum; the Bf-108, Canberra, F-111, Caribou, Catalina, and Hunter.
So for 9 planes it's not all that bad. And.... they are images not available anywhere else. I'm not sure what his minimum print size is, but I had a bunch to do. There was still room for a few little ones.