The sign says, "Old Timer's Bar - ALL DRINKS 10 CENTS!"
They all look at each other, then go in. On the inside, they realize in this case, they should not judge the 'book by its cover.'

The old bartender says in a voice that carries across the room, "Come on in
and let me pour one for you! What'll it be, Gentlemen?" There seems to be a fully-stocked bar, so the men all ask for a martini.In short order, the bartender serves up 4 iced martinis - shaken, not stirred - and says, That'll be 10 cents each, please." The four men stare at the bartender for a moment
then look at each other. They can't believe their good luck. They pay the 40 cents, finish their martinis, and order another round.
Again, four excellent martinis are produced with the bartender again saying, "That's 40 more cents, please." They pay the 40 cents, but their curiosity is more than they can stand. They've each had two martinis, and so far they've spent less than a dollar.
Finally one of the men says, "How can you afford to serve martinis as good as these for a dime apiece?"
The bartender says, "I'm a retired tailor from Brooklyn, and I always wanted to own a bar. Last year I hit the lottery for $25 million and decided to open this place. Every drink costs a dime, wine, liquor, beer, all the same."
"Wow, that's quite a story," says one of the men.
The four of them sipped at their martinis and couldn't help but notice three other guys at the end of the bar who didn't have a drink in front of them, and hadn't ordered anything the whole time they were there.
One man gestures at the three at the end of the bar without drinks and asks the bartender, "What's with them?"
The bartender replies, "Oh, they're all musicians...they're waiting for happy hour."

DonM