The employers said that an earlier agreement was being widely abused and cost them $1 billion a year.
Transit officials said the new agreement would not cost any more money than the rejected one.
But Casey said the agreement would cost each major league team a minimum of approximately $50,000 extra per year.
Such an agreement can cost $100 to $350 a year, depending on the cost of the initial treatment.
The agreement would cost consumers $1.2 billion a year.
The agreement could take 10 years and cost more than $5 billion to complete.
State officials said the agreement would cost about $80,000.
The agreement is expected to be completed this week and will cost the United Nations about $10 million.
The agreement, which took about four months to negotiate, will cost both sides millions of dollars.
The two agreements will cost Time Warner a total of $510 million.