simple: every scout you start, increases the costs of the next scouts, so as long as you keep scouting it keeps getting more expensive.That's a VERY physical manifesting imagination i have then ;-)
Would you care to elaborate on why i suddenly have a hard time keeping up producing goods for catering in tournaments, even though i still play the game the same way. Still collect 4x3 hour productions and 1x9 hour every day. But maybe i also just imagine those suddenly raised goods that i have to pay in each encounter. Maybe i just see double, so those 15K should only be 7.5K. But who's stealing my goods then ?
It sounds to me that you're a fighter and not a caterer, because it's very clear the costs in goods goes a good deal up.
Now if you scout a province, and dont touch it for a year, and you keep scouting during that year, then its very possible your next scout will be 30-40% more expensive then the province you scouted a year ago. So if you compare those 2, then you will see indeed a high cost increase.
If you however compare costs for a province you scouted just before reaching amuni tech, and compare that with a province you scout after you reached amuni tech, then you will see theres hardly any price difference.