Maybe a good idea would be posting a simple online calculator or a downloadable spreadsheet?
As a further side note, I don't understand (for an end user) the reference to:
>Emails sent: $4.03 (if sent externally) or $0.03 (if sent within the same account) per 1000 plus $0.18 per GB
I mean, while sometimes I talk to myself, I never wrote to myself, set aside internal company e-mails, which e-mails are not "sent externally"?
Or am I misunderstanding something?