Best Security System Repair in Cincinnati OH

We replaced two HVAC systems with a new one, and as result had an extra waterline that used to go to the humidifier. The saddle valve associated with that unused line was dripping, and instead of just replacing the saddle valve I thought I would get it done right and call a plumber. I also thought I would try Apollo again as their technicians are very nice.
The tech informed me that by Ohio code I really should have an expansion tank on the cold waterline since we have a pressure regulator. Absolutely fair enough.
He went out to work up some prices for me and came back with three quotes. The least of which was almost $1000 to replace the saddle valve with a T, and add the expansion tank on a T. The other two clothes involves replacing a perfectly good water heater with a full replacement to the tune of over $3000. I paid the trip charge of over $80, went to Home Depot and bought a new saddle valve for $12.71 which I replaced myself... saving at minimum 95%. While in Home Depot, I asked a couple of plumbers who were chatting in the aisle what they would charge for the work including materials, and both said under $300.. and laughed their heads off when I told them the quote cost.