Phone notification fees

To increase his tips the local bartender posted the following: PHONE NOTIFICATION FEES (ADD $1.00 TO INSERT NAME) $1.00 HE NOT HERE! $2.00 ON HIS WAY OUT! $3.00 HE JUST LEFT! $4.00 HAVEN'T SEEN HIM ALL DAY! $5.00 WHO? PAY BARTENDER UPON ARRIVAL AT BAR.