So... apparently all of those three "DLC" packs are already on the disc.
All you end up downloading for an extra AU$45 are three 100kb keys to access something on the disc that you already paid AU$50-70 for.

(noting a comment on the TFW page) That'd be like buying a DVD/BR from the store for $20, and then having to pay an extra $15 to access the bonus features on it.

I know gaming has become such a huge industry in recent years, but damn, this is just greedy.