Man, you only see those things on sale during special occasions.
This. This thread. This thread should happen.
I think I'm going back to play Fallout 3 just for the Mothership Zeta DLC...
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All Fallout DLC nowadays should be 400 MSP in my opinion. The only DLC I have thought was worth $10 was Point Lookout.
It would be nice if they would drop the DLC price for the PC. Right now the game itself is on sale but the DLC is still full price. You'd pay twice as much for all the DLC than the cost of the game.