I am SOOOOO glad I picked the Iron Warriors. This might be the single coolest model that Forgeworld has ever put out. Seriously. I love this model.
These things are 205 points each and gain benefits when you have more than one standing next to each other. In the fluff, they're Perturabo's personal bodyguard unit... The Iron Circle. In fact, Forgeworld is more than willing to sell you six of these guys with Perturabo and some transfers/brass bits for the low, low price of 408 GBP, which comes out to around 600 USD. A little rich for my blood.
I could definitely see adding two of these to an army as bodyguard "twin robots" for the Warlord. I'll have to wait and see what our Russian friends decide to charge.