Read carefully... The indictment claims that Project Lakhta had a monthly budget of $1.25m USD.

"Project Lakhta had multiple components, some involving domestic audiences within the Russian Federation and others targeting foreign audiences in various countries, including the United States."

One component of Project Jakhta was the Internet Research Agency - the troll factory. Even IRA itself has a purview much larger than just sowing discord in the US around the election -- see, e.g. the Wikipedia article. [1]

The $2m (total, not monthly) figure was reported last year.

[1] - https://en.wikipedia.org/wiki/Internet_Research_Agency