Videos like this are seductive. But I suppose you could build an authentic Neapolitan oven in your kitchen & take a VPN course for the cost of a decent boat, pool, Mercedes, etc. Or on the DIY side, something comparable for well under $5K. Not inexpensive, but less than that cottage at the lake or a plane would cost.
Just think of it as a stress reduction program. It's hard to make a Neapolitan pizza without a proper oven; so much easier once you swing the oven. I struggled to make great espresso for a year and had just about decided that it was alchemy. Then I had a chance to use some high end equipment & found it almost effortless. It's definitely easier with good tools.