The price of the DLCs is so disproportionaly high, in comparison to their production cost, that they are probably guaranteed to generate a net gain, even if they fail commercially and don't match SEGA's expectations. From the Linked In profile of
Stelios Avramidis, we know that the blood pack for Warhammer and the Wood Elves made respectively over 200% and 100% of net profit.
Mr. Avramidis* presents these figures as a total success, but there's a chance that he's hyping the results to promote his bio. Judging from the omission of the Beast Men and the general more lacklusture welcome they received from the community, we can deduce that Beast Men sold less, although that doesn't mean that the expenses surpassed the profits. In my opinion, most DLCs are probably profitable enough, except for the few glaring disappointments. For example, Beasts of War for Rome II was so much ridiculed in the Internet that one week after its release, CA was forced to release a couple of extra units (including warriors dressed as crocodiles) for free, but only for the owners of the DLC. That sounds to me as a typical attempt to strengthen the purchase numbers, after an underwhelming performance on release day. The same conclusion will probably apply for Eight Princes, but Nanman will probably achieve its goal. .....