$50,000 to buy and train a police dog is too much.  Way too much.  Reduction of the cost is a must.  I have a friend that used to train police dogs for a living.  He said it was easy because these dogs are so super-smart.  Just pair them with a trained dog for a short time to learn the game.  And then work with them yourself.  $10,000 is the max it should cost.