This is a combination of market-wide offer along with additional discounts/specials for a limited time from CameraPro:
RX100 Mk III $747: http://bit.ly/1DLuLis
Sony A7 Body + Bonus 28-70mm Lens $1069: http://bit.ly/SjmUCw
Sony A7R Body + Bonus 28-70mm lens $1789: http://bit.ly/1lWBJmh
Sony A7S Body + Bonus 28-70mm lens $2049: http://bit.ly/1DD5hQZ
And we now have very good stock of Sony 24-70 F4 ($849): http://bit.ly/1uIKLHO & 70-200 F4 ($1299) http://bit.ly/1owv7D6, both at limited time prices while stocks last.
Buying on these models is unlikely to get better than this.
Clicked on the first link for A7 body + 28-70mm Lens, comes up with the bonus being a metabones adapter. If this is the actual deal/bonus please amend your op thanks