60-100k$ seems a lot to me. Are you sure your opponents set their prices as correctly as you do ?
Once promoted last season, I was around 550k$ and it looks like you earn 10-20k more. The main difference is that I won some games (rival, TV) while you don't at the moment. So that's a solid advantage for you, but i'd say it's not that huge (in front of the investment and what else could have been done with this money).
And you're still in the promotion bonus, which will fade earlier because of the losses. Might be interesting to see your gate receipts then.
And yes it's nice to get your feedback too ! Cause if one day I have to tank for a bit, I might build some more lower tier seats if you can show me how much you get out of it :P