Prices are in in 1 key = $2, but are super negotiable. I just rounded up to the nearest key. I am willing to part for much, much cheaper via PayPal.
All are giftable Steam copies -- not product keys, so you may resell them or gift them or whatever you want.

3SwitcheD - 1 key
Action Indie Pack: Includes 5 items: Larva Mortus, Penguins Arena: Sedna's World, RIP - Trilogy™, Space Trader: Merchant Marine, Tank Universal (x2) - 1 key
The Binding of Isaac (x2) - 2 keys
Dream Pinball 3D (x3) - 1 key
Enclave - 1 key
Faerie Solitaire (x12) - 1 key
Gorky 17 - 1 key
Iron Sky: Invasion - 2 keys
Just Cause - 1 key
KnightShift - 1 key
Krater (x3) - 1 key
Larva Mortus - 1 key
Obulis - 1 key
Poker Night 2 - offers
Pressure - 1 key
Psychonauts (x2) - 2 keys
Serious Sam 3: BFE (x2) - 2 keys
Super Hexagon - 1 key
Tank Universal - 1 key
Two Worlds II Castle Defense (x5) - 1 key
World of Goo - 1 key
X-Blades (x4) - 1 key