In my state they had a small stockpile of ventilators. It was poorly planned from the very beginning. All they looked at was price per ventilator. They then foolishly bought from three different manufacturers. Why were they cheap up front? The maintenance costs were through the roof. Companies made their money on the mandatory upkeep to meet manufacturer and FDA requirements. It cost so much, that they released the ventilators to various hospitals so they could pay for the expense of the ventilator. The kicker is then if they needed it they would take it from you, even if you paid for the upkeep. The cost of the kits and batteries along with labor cost of the technician to maintain the vents was through the roof. Two of the three models selected were absolute junk and the third model required unbelievable maintenance requirements.