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DailyIndieGame has the DIG Super Bundle 16 live at their site.
Pay $1.49 minimum for:
Airship Dragoon
Post Apocalyptic Mayhem
Stonerid
Reversion – The Meeting
Nikopol
Truffle Saga
All activate on Steam.
If you beat the average price (currently $1.54) you get an extra Steam key for each game.