I went the Costco route with mine last year. Did the three person, which is really perfect for two people. I did have to have an electrician install an outlet. Its still 110volt but needs a special plug.
Costco delivered and the driver put the pallet in my garage. It was a two person job to move the parts/panels to my basement and then my neighbor and I assembled it in 1 - 2 hours.
I’ve been super happy with it and it works as advertised. On days I use it, I use turn it on before a training session so it is nicely pre-heated by the time I’m done. I tend to mainly use it right after workouts. Super convenient to have at home.