That's just known expenditures by the Internet Research Agency, though. For a full accounting, you'd not only need to know if that was all the IRA spent, you'd also need to include, say... how much Russia spent on hacking into the DNC's emails, and into 39 states' election infrastructure[1]; how much value they extracted from the polling data Manafort sent their way[2]; etc.

And even with all costs taken into account, it took a perfect storm of factors outside their control for their actions to actually change the result. I doubt they even expected that outcome themselves.

[1] https://www.bloomberg.com/news/articles/2017-06-13/russian-b...

[2] https://www.theatlantic.com/politics/archive/2019/03/mueller...