We dare you to call up a restaurant at random and ask how much they'd charge you for bringing in your own bottle of wine. We guarantee you'll be quoted a price of no less than ten dollars and probably at least twenty, all for the hard work the waiter has to do to uncork and pour your chosen label. After all, why should the management let you enjoy a vintage from your private cellar when they can charge you triple the wholesale cost for one you don't really care about? Not Su-Shin. This sushi place simply doesn't care about what you bring in -- Petrus or plonk. They'll still charge two dollars per customer. Let's say for argument's sake you've brought with you a nice Riesling that goes really well with Asian flavors and you spent, oh, $12 on it. For a romantic dinner for two you'll be paying an additional four dollars for the privilege of drinking it with your meal. That's a grand total of $16. (The same bottle, if the restaurant offered it, would probably be listed at $25 or more.) So what does Su-Shin know that its colleagues don't? Only that customers are likely to spend twice that on, say, uncooked tuna.