Value required to achieve the level 2?

The majority of them does, since a lot of those highly discounted games were added to the 'bundle list'

As far as I know.

you can check there if a game was bundled or not (though i don't know if 100 % accurate) http://www.steamgifts.com/bundle-games

Personnaly i bought sniper elite (the first) for 0.99 (90% reduction) and gave it here, seems it was not a bundled game

you can also check your "real cv" here : http://54.93.81.159/

and normally cv level are each 25$ "Real CV"

I've been out of SG forums for half a year, but if they haven't changed their policy, only games that surpass the 95% discount on US Prices will get added in the bundle list.

Space Trader: Merchant Marine (1 Copy) (0.75$ Total)
Miner Wars Arena (1 Copy) (0.75$ Total)
Robowars (1 Copy) (2.25$ Total)
Sweet Lily Dreams (1 Copy) (2.25$ Total)
RIP - Trilogy™ (1 Copy) (0.75$ Total)
Commando Jack (1 Copy) (1.5$ Total)
Commando Jack (1 Copy) (1.5$ Total)
Legions of Ashworld (1 Copy) (0.75$ Total)
World War 2: Time of Wrath (1 Copy) (1.5$ Total)

These are the games you gave away.
It says these were all bundled.