[mothered]

Alarms bells are ringing here:

let me know the package you'll be interested In purchasing and I'll give you instructions on how to make the payment.

Notice there's no mention of the actual methodology used?  

Furthermore:

just the software as the user already know how to operate it and 5 Facebook accounts too

"Software" to hack an FB account? Enough said.

It's probably the work of a mass-mailer. Of 10k+ generated emails, they're sure to find a least a few victims falling for this.