Cheap way to get into Pro Tools 12?

There are a few vendors that are offering Avid express / duo systems for $300-400.

I have called one dealer over the phone and they mention that their offer includes a free (non-educational) download of the full version of PT12.

This seems much cheaper and includes a small usb interface.

Anyone on here took this route? Any drawbacks?

Thanks in advance for advice

Cheap way to get into Pro Tools 12?