More Googling, this time on "Media Internet Consultants" as mentioned in the original email.
This brings the following link:
Genuine or not, suspect not... - Broadcasting - Digital Spy Forums
A further Google on "Edif. Neptuno, Planta Baja, Ave. Ricardo J. Alfaro, Tumba Muerto, n/a, Panama", again from the original email, gives you:
New SCAM: “Google Earth” scam email. Don’t PAY for Google Earth! | PurpleCar
Draw your own conclusions - I'd stay clear and as Punter said, always get from the maker...