We put one in when we lived in Vegas. We had in ground with plaster and tile sides, small sun deck in the pool, in floor cleaning system, 2 waterfalls that came out of the back wall of the pool, an attached hot tub that had another waterfall that flowed in to the pool. Also, we had a heater big enough to heat the hot tub up within 10 minutes and heat the whole pool. And a remote key pad so that you could control everything from inside the house. It was not a huge pool but more of a lounging pool.

All that for 40-45k in the Las Vegas area. Around here (GA), most people spend way less because they do pool liners versus plaster/tile.