Yeah, the DLC should be free on disc or an expansion disc with the DLC was sold separately for those who only have the regular SW:tFU. I mean, I'd be happy to see a Ulimate Sith edition without the steelbook or collector's stuff.
In other words, a Platinum Hits version of the Ultimate Sith edition for $30, even if the DLC was download tokens. The DLC is like $30 alone just for the 3 stages.