February 7 and 8, 2013: bought three packs and paid $10 to the bots for many RTR cards (the cheaper ones). Nice Pulls!!!
These are the cards I am missing.
Innistrad
Dark Ascension
Avacyn Restored
Magic 2013
Return to Ravnica
and Limited Edition Alpha (just kidding, I will never own these cards!!!)
As of February 18, 2013, these are the cards I can buy while they are in Standard from Innistrad and Dark Ascension:
innistrad
kessig wolf run
past in flames
angelic overseer
kessig cagebreakers
grimgrin, corpse-born
mikaeus, the lunarch
essence of the wild
woodland cemetery
dark ascension
grim backwoods
beguiler of wills
havengul lich
flayer of the hatebound
moonveil dragon
drogskol reaver
archangel's light
March 31, 2013 update: paid $22 to the bots to buy all of the cards in the above list, and added three packs of Avacyn Restored. Latter were a great addition: two more cards added (Zealous Conscripts and Angel of Glory's Rise). Here is one of the packs.
May 1, 2013 update: 2 packs of RTR, and 2 packs of GTC. I recently bought a few miracles to feed my Crackling Perimeter deck. Here is what I am missing for AVR.
The packs for RTR. Pulled an Abrupt Decay!
What I am missing for RTR.
And the GTC packs. I am missing many of GTC because I plan to buy many more packs before I buy singles from the bots of the cards that I am missing.
Pulled a Mythic Rare!
May 5, 2013: added 2 packs of RTR and 2 of GTC. Pulled a Supreme Verdict and an Aurelia!
...and I am loving the difference between ISD block completion and RTR block completion. For all of $5 I got almost every rare, uncommon, and common in Gatecrash! I am missing all of 21 cards.
These are the AVR cards I can buy before they rotate out of Standard.
Tibalt
Somerwald Sage
Malignus
Tyrant of Discord
Primal Surge
And these are the ones for RTR.
Loleth Troll
Detention Sphere
Desecration Demon
Slaughter Games
Jarad, Golgari
Armada Wurm
Epic Experiment
And now that I am only missing a few of GTC, these are the ones I can get while in Standard.
Realmwright
Enter the Infinite
Lord of the Void
Hellkite Tyrant
Gyre Sage
Giant Adephage
Deathpact Angel
Borborygmos Enraged
Thespian's Stage