But what has civics switching to do with anything then?

You use the cost of civic switching to figure out the current modifiers you would have on espionage missions in that city.

-The base cost for switching civics is 600 on normal speed, 1200 on marathon.

-The base cost for sabotage procuction is 6*hammers invested on all speeds

-Both those costs will be affected by the same modifier, which is a complicated formula involving distance to capital, various religious bonuses, do you have trade routes to the city, espionage spending, possible counter espionage missions and so on.

So what really happens in this calculation is that first you calculate the modifier by dividing Influence Civics cost with the base cost of that mission:

Influence Civics / 600 (normal speed)

Next you divide the sabotage production cost with this modifier to find out the base cost of a sabotage production mission:

Sabotage Production / (Influence Civics / 600) = Sabotage Production / Influence Civics * 600

Finally you divide this base cost by 6 to get the actual hammers invested:

Sabotage Production / Influence Civics * 600 / 6 =

**Sabotage Production / Influence Civics * 100**