Federal Police missions

Got my first mission tonight. Simple one, 4 cops, 4 feds, 1 Sheriff. I didn't have a sheriff with in 50 miles so I bought one. 15k for the unit plus coins for training. I also needed 1 fed so add in another 10k. I already had the cost for 3 feds (30K). Payout 981. Guys, the cost to build the Fed building, and at least 4 cars is bit high. Since I only have one Fed building covering 1 major city the pay outs will not cover the investment for years. Even if you only count the cost of the units themselves, not a good deal as it stands.