The factory bell

Joe was an American manufacturer of machine parts. He had a prospective customer from Albania visiting him for imports of machinery to his country and Joe was showing him around his factory.
At noon, the lunch bell rang, and eight hundred workers immediately stopped work and left the building.
"Your workers are escaping!" cried the Albanian visitor. "You must stop them."
"They will come back, nothing to worry," said Joe. And indeed, after an hour, the bell rang again, and all the workers returned from their break.
After the orientation, Joe turns to his guest and says, "Would you like to place an order for any of these machines?"
"Forget the machines," says the guest. "How much do you want for that bell?"