The units were made in 2001
hi. units that old you will have problems with connections to modern equipment. you need to know the data setup. you could be spending more in data boxes
it depends also on how much you are going to be paying 3k at that time was the going rate but over time camera res has gone up alot so dont expect to get images as you do from PTZs of today.
what will you be using them with dvr type. do you want to move them remotly over network