Well mkescan...the Milwaukee system was actually purchased through a TSA grant from Transit. That is why they and the Courthouse were the 1st on the system. Feds paid 80% county paid 20%. I cant remember the total amount, and I think that was for the 2 sites Muridale and US BANK.
They then added more sites and users as time went on. Now they have decided to add some new P25channels to ALL the sites and start to migrate users over to P25 with the plan on converting the anolog over to digital. This all started with them attaining additional new 800mhz frequencies recently giving them an excellent migration path.
But to answer your original question, if you include the price of a new tower/shelter and all the equipment.. you are looking at about 1 million per site.