Missing money problem

 

Three men walk into Condorito's Pizzeria in NYC and order a large pizza each. They eat their pizzas and request the check. The waiter brings the check totaling  $30 ($10 for each of the pizzas). Each of the men pay with a $10 bill for a total of $30.

The waiter goes back to the cashier and gives him the money. At this point the cashier reminds the waiter that Condorito's is having a special on three pizzas—three large pizzas for $25! So he tells the waiter to give the men $5 change.

The waiter realizes that he can't split $5 three ways so he decides to keep $2 and give them only $3 change—he gives each man $1 and pockets the other $2.

Summarizing...

The three men spent $10 each for a total of $30, but each got $1 back. The net is that each one of the men spent $9 for a total of $27 ($9 x 3) and the waiter pocketed $2.

$27 + $2 = $29

But this SHOULD add up to $30 not $29!

Where is the missing $1?