I had purchased what I thought was a stainless steel wire 3 shelf cart from Sam's Club for about $50.00. It was close to being the right height (top shelf 30 inches above the ground), but after continuous storage out side, it is almost covered completely with rust.
Over the last 18 months I've been thinking of building a cabinet for it. I've finally decided on a "rough" final design, and I'm in the process of building it. Since I keep thinking of things to add to the cabinet, and with no plans; other than a rough cabinet draft; I may have it finished by the end of June
What every chart you buy or build, I figuring the ideal height would be 28 inches above the floor, but I wouldn't go any higher then 30 inches.