History of Space Exploration: Chapter 7, Exercise 2 — Possible Solution
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ANSWER
The source says the programme promised savings through reusability, but gives
$450 million per launch (2011 dollars) and a total project cost of $211 billion
(2012 dollars). Each flight remained expensive.

LIMIT
The source gives no original cost or flight-rate target, so the chapter cannot
say how far it fell short. The two figures are in different years' dollars.