(copying this back after my comment got moved in the thread split, while what it was replying to was left here)
60% price increase, at least in USD: $4.99 to $7.99.
If IOI decides to answer, I expect the answer will be that the price increase is because of the extra work that went into making it a Special Assignment: including more kill opportunities than they had in previous celebrity ETs, designing the challenges, and so on. Or else just “it includes more content: a Special Assignment, an additional suit, and a fourth item”.