You're not getting ripped off; your guy is not working free, but his not gouging you, either. Here's your heater on Amazon:
Hayward H250FDN Universal H-Series Low Nox 250,000-BTU Natural Gas Pool Heater
That's close to average wholesale pricing in non-prime markets (ie, everywhere except S. Calif and S. Florida). As I cautioned in this post, earlier today, you have to expect $500 markup on heaters, if your guy is going to take the warranty risk. Your prices are similar to what I'd expect in this market (Chattanooga).
Personally, I don't love automation, but many people here do. Also, I'd probably encourage you to replace the filter, if you have what I suspect: the System3 makes a great DE filter, but really lousy sand filter. And a good large filter will do more to make your pool 'easy' than automation, which I tend to think of as a "gee whiz-look at me!" whiz-bang that's very prone to trouble.
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