The ad says non structural. Could be hail damage, been for a swim, exwife went to town on it with a baseball bat, or stolen and recovered with mechanical damage. I believe the dealer is legally obligated to give exact details and the Vicroads report should confirm this too. Any car on the register is always going to be less valuable and harder to sell, some are bargins if you know what your looking at and plan on it being a long term vehicle. They may also be harder to insure?
Give the dealer a call, if your still comfortable with it give your insurance company call. Make sure you know exactly what your getting yourself in for first.