Living Social offers an Adult Ticket to "Pompeii: The Exhibit" for $16, or a Kids' Ticket for $12. Plus, get a $5 Cake Boss Café credit for free. Combined, that's up to $21 off and the best deal we could find for this exhibit, on at Discovery Times Square on West 44th Street. The Cake Boss credit will be given at the ticket window. All vouchers must be used by September 4. Deal ends August 18 at 5 am ET.