First off, I live in Colorado and everything is more expensive here. I'm getting estimates to replace my water heater. I'm being told because the original install was power vent, I have no other option for my home, and it will just be $5300 for a 50-gallon. I think I last replaced a 50-gallon water heater in Iowa for about $750 installed. Are they being honest with me that I have no other options? Am I just screwed?