boatbuilder,
The box tops are open, and the parts are in bags. The japanese are very trustworthy people and I am probably one of two americans who would even go in there. The rest just care about getting drunk and acting foolish. They don't worry about people stealing because that's just not done around here (by the japanese). It is considered very dishonorable to steal. Still, there are some kits that are shrinkwrapped, too - like imported ones. I know the brand new kits that are sold at department stores are always open.