Omaha (Nebraska) Metro area varies a little for SP.

In Omaha, it's $16/umpire for 2-umpire, and $20/umpire for 1-umpire. In the Metro Open league (the top league in the area which is handled in Omaha), it's $18/umpire for 2-umpire, and $22/umpire for 1-umpire.

Go across the county line to LaVista, I know that they're getting $18/umpire for 2-umpire, and $20/umpire for 1-umpire.

Go across the river to Council Bluffs (Iowa), it's $15/umpire for 2-umpire, and $20/umpire for 1-umpire.

Those are the league fees. Tournament fees tend to be $17-18/umpire for 1-umpire and $16-18/umpire for 2-umpire, depending on the type of tournament, etc.