Considering my interest in Dragon Age I had to check if this was mentioned as similar deals from raptr have been announced on here. I couldn't find anything about this so here goes.
The cost is simply your own time to sign up.
The below link tells you how to get points.http://raptr.com/store/get-points
Basically you sign up and set up with raptr which awards you with 500 points, exactly enough to buy the pack from the store then redeem it on your origin account.
Each Pack includes:
The Avvar Mixed Draft mount,
The Amulet of Martial Determination,
A Dragon Age Multiplayer chest (Medium Size)
EDIT: Revived freebie due to end date now the 31st of December 2015