All ME2 DLC is at 200MSP each, the sale ends at midnight tonight! It's also available in the US and EU (Not sure about any where else, but try it)
So that means you can get Lair of the Shadow Broker, Kasumi and Overlord pack for 600MSP all together, usually these packs retail at either 800MSP each or 560MSP each.
The other DLC available is either already cheaper than 200MSP or comes with the game, well worth picking up as they're all highly rated DLC packs.
Lair of the Shadow Broker is not compatible with Czech, Hungarian or Polish versions of Mass Effect 2.