I make pretty good money, but I'm frugal and hate waste. I moved to a very dry place and I just got me a evaporative (swamp) cooler; the drier it is, the better they work. For folks not familiar with them they consume about 1/12th of the electricity a wall unit AC would, and can drop ambient air temperature air 20+-degrees F. Most of the time they are all you need, and still leave you the option to use the AC to when temperatures get to extremes. Here is where I don't belong: Of course I bought it used. The family I bought it from finally could "afford" AC instead of the swamp cooler. I even mentioned 'but you don't have to run it all the time, you could use the swamp cooler on mild days'. Nope, they were an AC family now! And of course a coworker, on the same high income bracket, seems like there is no point messing with them, and doesn't seem to have a high opinion about buying used appliances.…