Here is my dilemma.
There was a Div III team that tanked this season into my league. He has a really good roster that I doubt I can beat out for a title shot this year. However, no one else in my division looks challenging for season 24 because they don't have the current players or income to support making a run at the title. So my plan is to compete enough to get into the playoffs this season and then go for the title next season. Anyway, my trainees are two seasons away from being competitive and I want some homegrown starters.
So I am earning 150,000 a week before cup games. If I expand to 15,000 bleachers I should be able to sell each seat at $8 per. This should keep my income around that $150,000 mark for the remainder of the season. By season end with my other planned expansions I should have around $500,000 to spend on free agents during the playoffs. This should be enough to buy me two quality Div4 starters.
Even with those roster additions, because of my expansions I should average $125,000 per week in earnings for season 24. By the end of the season I should have roughly $1.5 million to upgrade my roster going into season 25.
Anyhow, from the way I see it each seat expansion is worth 40% more than the original seat. In other words each bleacher is worth $4 by virtue of expanding. Therefore it takes around 50 weeks to earn enough money to pay for the expansion as long as you are close to either selling out or having just a few empty seats. However, you are getting the return on the investment weekly.
5000 to 15,000 = 40,000 per week.
500 to say 4500 = 56,000 per week
50 to 500 = 18,000 per week
0 to 30 = 9,600 per week
So in the most extreme case assuming both the lowest amount of seats and the highest amount of seats are priced optimally, the higher amount of seats should earn a team $123,600 more per week (when playing in the same division). Considering I am halfway to having an optimal expansion, I still have roughly $62,000 more I could earn per week.
Of course the key note of all this is that I will not be able to win my league this year. If I could win, the money would be better spent on ensuring I get the title because I would earn more per seat, get more merchandise, and more TV contract. But since I can't win this year, I see no better way to spend my money.