Go and physically view the container. Inspect what you are buying with your own eyes rather than relying on pictures.
Check the roof for rust and dents. Dents hold water and if it doesn’t already, will cause rusting.
Check the doors and rubbers to make sure they swing freely and that the door bars operate well. Get this in writing if you cannot view the container. Make sure the door rubbers are secure and check there are no missing pieces.
Check the condition of the floor. A container floor is usually 27mm laminated plywood. Forklifts are used to load containers. Sometimes they can get gouged, cracked or have water damage.
Check if the container has been repainted. If the container has been painted either inside or outside, then you need to ask why. Usually this would indicate they are hiding something. How rough is the area that’s been painted? Improper rust treatment will lead to further rust. We usually don’t sell repainted containers, we sell them as they are and then paint them to suit the customers colour.
If you cannot view the container, ask for photos. Never buy a used container without seeing photos of the roof, sides, ends, doors and interior including the floor.