Compute the total cost per mailbox per month of

BKFin.com's current e$-$mail function.

Suppose

Mail.com, a leading provider of Internet messaging outsourcing services, offers to host

BKFin.com's e$-$mail function for $$9$ per mailbox per month. If

BKFin.com outsources its e$-$mail to

Mail.com,

BKFin.com will still need the virus protection software, its computer hardware, and one information technology staff member, who would be responsible for maintaining virus protection, quarantining suspicious e$-$mail, and managing content $($e$.$g$.,$ screening e$-$mail for objectionable content$).$ Should CEO Wise accept

Mail.com's offer?

Suppose for an additional $$5$ per mailbox per month,

Mail.com will also provide virus protection, quarantine, and content$-$management services. Outsourcing these additional functions would mean that

BKFin.com would not need either an e$-$mail information technology staff member or the separate virus protection license. Should CEO Wise outsource these extra services to

Mail.com?