Thanks for the Supergirl recommendations, ATDrake and TrevorViking. I wishlisted it. After the Batman, Image, Vertigo, and Grant Morrison sales, I won't be able to afford more comics for a while.
By the way, if anyone here reads in Spanish, check out the new digital store from Astiberri, one of the best publishing houses in Spain:
http://www.astiberri.com/digital. I don't think they offer sales, but prices are quite reasonable. I personally recommend anything by Paco Roca. Dublinés by Alfonso Zapico (based on James Joyce's life) and El héroe by David Rubín are supposed to be great as well.
I am having trouble finding good digital comics in Spanish, so I thought I should mention this nice discovery.