Uhh... turns out I should've been a lil less lazy and actually read what I dig up. The articles actually give a number of sold SKUs plus the overall amount of money they brought in.
Quote from above sources:
"... the Complete Saga on Blu-ray release broke global sales records with
1 million units sold and $84 million filling cash registers.It quickly becomes the #1 pre-order and #1 catalog title since the launch of the high-definition format."