For anyone curious, this is part of a broader project to democratize access to often difficult-to-obtain or paywalled court opinions across many different jurisdictions, among other things.
https://www.nytimes.com/2019/02/04/us/politics/pacer-fees-la...
https://www.nytimes.com/2019/02/07/opinion/pacer-court-recor...
https://qz.com/283772/why-pacer-should-and-should-not-be-lik...
It's also an incredibly technically outdated and user unfriendly system, so even without fees it would be worth scraping.
[1]https://en.wikipedia.org/wiki/PACER_(law)#Litigation_over_fe...
Also, PACER bills quarterly, and your first $50 is free. Of course, if you are a party to the case, you can download for free as well.
And only the first $15 is free, but if you spend $16, you get charged the whole $16, not $1.