From what I read on Amazon it doesn't look like it's expandable. If you get Killer Bunnies and Quest for the Magic Carrot and all the expansions there's 700+ cards I think. It is expensive once you are buying all the expansion decks though.
Game listing at launch at 12am PST.
Note: Games do often sell out as the day goes on, sometimes new items are added, but once sold out, it tends to stay sold out.
Kahuna Board Game $24.99 $15.32
Sherlock Holmes Consulting Detective: Jack the Ripper & West End Adventures Standalone Game $49.99 $32.92
Wonder Forge Pictopia-Family Trivia Game: Disney Edition$22.99 $11.99
Fantasy Flight Games Perudo Board Games $19.99 $13.99
CMON Richard: the Lionheart Board Games $69.99 $48.42
Fantasy Flight Games Legacy of Dragonholt RPG $59.95 $35.99
Bezier Games One Night Ultimate Alien Game $12.50 $9.49
Fantasy Flight Games Jelly Monster Board Games $19.99 $14.49
Daily Magic Games Quests Of Valeria $25.00 $12.91
Star Trek: Five Year Mission Board Game $34.99 $18.60
Fantasy Flight Games Hoax $12.95 $7.99
BLUE ORANGE GAMES The Boss Card Game $19.25 $10.65
Renegade Game Studios Flip Ships $33.83 $24.99
Fireside Games Munchkin Panic $39.99 $14.99
Bezier Games One Night Ultimate Werewolf $24.99 $9.99
Saboteur 2 Card Game $12.99 $7.00
Discworld The Witches Board Game $49.99 $31.30
CMON Arcadia Quest Board Game $99.99 $52.99
Blue Orange GAMES 06300 Maki Stack Family Party Game $27.99 $15.82
Lost Cities - The Card Game $19.99 $11.89
Ultra Pro Jolly Roger Games 13 Days - The Cuban Missile Crisis $24.55 $19.99
Wonder Forge Disney/Pixar the Incredibles Save the Day $19.99 $14.99
Asmodee Cash 'N Guns 2nd Edition $35.99 $25.05
Stoneblade Entertainment Ascension: Deckbuilding Game $39.99 $23.99
PlayMonster Stratego Battle Cards $9.99 $6.99
CMON Zombicide Season 2: Prison Outbreak $99.99 $48.73
Wonder Forge The 60001511 Suspicion Family Board Game $19.99 $14.50
Saboteur Duel Card Game $15.00 $8.56
Avalon Hill Axis & Allies D-Day Game $44.99 $29.99
Legends of Andor - Part III the Last Hope Board Game $45.39 $30.57
Bezier Games Ultimate Werewolf $14.99 $10.50
Q Workshop Call of Cthulhu: Black and Green Dice, Set of 7 $19.00 $10.96
Prowler's Passage $35.00 $23.87
Thames & Kosmos Legends of Andor Board Game $59.99 $29.99
Killer Bunnies and the Quest for the Magic Carrot; Blue Starter Deck $29.99 $17.99
Q Workshop Steampunk Clockwork Caramel & White Dice Set (7 Piece) $15.58 $11.50
IELLO Kanagawa Game $23.99 $17.99
CMON Massive Darkness Board Games $119.99 $68.99
Bezier Games Castles of Mad King Ludwig $59.99 $30.60
Dairyman Dice Game $16.12 $9.99
Z-Man Nmbr 9 $29.99 $21.24
Fireside Games Castle Panic: Engines of War $17.95 $9.25
Bezier Games One Night Ultimate Werewolf Daybreak $24.99 $9.99
Stronghold Games Not Alone Board Game $29.95 $16.53
Ravensburger The Castles of Burgundy Board Game $41.99 $22.99
IDW Games the Legend of Kora: Pro-Bending Arena Miniatures Board Game $37.10 $25.41
Watch Ya Mouth Throwdown Edition Card Game $24.99 $9.99
Renegade Game Studios Honshu $19.11 $13.96
Compounded Board Game $34.99 $22.02
Star Trek Frontiers (Star Trek Themed Mage Knight) Board Game $79.99 $47.96
Wonder Forge Sick & Twisted Charades Game Board $24.99 $19.14
Bottom of The 9th Card Game $19.99 $12.99
Ravensburger San Juan Card Game $34.99 $17.99
Indie Boards & Cards Aeons End War Eternal Board Games $40.64 $30.63