The expected ULA launch prices for 2018 and 2019 are much lower at $202 million and $216 million, respectively. However, those amounts are still more than double the $83 million and the $96.5 million the Air Force is paying SpaceX to launch GPS satellites those fiscal years. SpaceX might raise its prices for 2020 and beyond, but it most likely won't cost as much as $400 million for one launch. In response to Ars' report, SpaceX chief Elon Musk tweeted that a price difference of $300 million per launch means its clients' satellites are basically free:

$300M cost diff between SpaceX and Boeing/Lockheed exceeds avg value of satellite, so flying with SpaceX means satellite is basically free https://t.co/CaOulCf7ot — Elon Musk (@elonmusk) June 16, 2017

The best thing about being more transparent about launch prices? Lawmakers can now make more informed decisions about how and where to spend taxpayers' money.