I find that the general cost of (especially targeted)1-2 * is, from the point of a free player, in terms of both gran and pointcard expensive.
From this perspective, I was happy about this sale and was "participating" in it. After the card of the week certanly one of the best ways to cheaply target lost of low rarities.
I understand that this sale does not really matter much for a paying audience that gets a box, but for mid/low spender its really interesting.
PS: the remark about the ex packs is completly right.
example: I have intrest in a certain 1*, and spent till now ca 700 gran (7x100) on it (including recyclings). I have curretnly 1 copy of this card
(even though I improved my general card pool a bit).
If I compare this to an ex pack of 400 gran where the cards have a guaranteed impact on the quality of my card pool, as ex cards tend to do that + are targeted, ex pack really steals the show even from this sale
IT would be really benefical, especially for long term to find kinds of sales, that allows better targetting of low rarities. Many decks can work without high rarity cards. I am sure this could be attractive to mid/low spenders (most of the general sales currenlty like the lotto mechanism mainly benefit big spenders).