Since we are all stuck home, some 94,000 new in-ground swimming pools are to be opened by the end of the year. There is one being built on the lot near me in Westfield as I write this.
And Hot Tubs have grown in popularity by 400% (got ours some ten years ago).
For those who want to do this more inexpensively, try heading to the local farm store and buy a livestock galvanized tub. Then add a water heater (propane or electric) and yippee, you got a hot tub.