Those bastards. How DARE they create a savings bundle, thereby creating extra incentive for those who otherwise may never purchase their product! Unacceptable! And not giving us this offer before the parts pack existed, no less! Why, this ... marketing ... it's probably the worst thing that's happened to PC gaming since the CD key, I tells you.
Guys, this is hardly unprecedented, and it's absolutely nothing to get worked up over. If you really want to get the parts pack for free, why not hold off on buying it when it's released and see if a similar offer doesn't pop up with the space expansion. Or, if you don't want to wait for a special offer that may or may not happen, buy it on release. If it seems unfair that you had to pay more, think of it as paying extra to get it sooner than they did.
