Ares I
One of the strongest programmatic criticisms with the Ares I and Ares V architecture was the high cost for both developing two new launchers and for operating two concurrent programs. The cost concerns were cited in GAO Reports to Congress noting that the Ares I alone was expected to cost up to $14.4 billion to develop. Former NASA Administrator Michael D. Griffin confirmed that the total cost for developing both Ares launchers would be $32 billion, indicating that the Ares V would be more expensive to develop than the Ares I.