I'm just throwing numbers around based on my experience. In the USA, I got a full kitchen remodel done for 25k in a modest, clean, homey kitchen in a $750k home. Then I visit some high-end residences, and their kitchens look like Gordon Ramsay shows up every night to cook a private dinner. It's a stark contrast.

I was once debating between granite countertops that ranged from 5k to 10k—like it was a make-or-break decision for my budget—only to walk into a home where the owners start rambling on about how much of a pain it was to get custom wood countertops imported from Brazil, sourcing the same industrial kitchen range that michelin star cook cooks use, industrial fridge/freezer setups, marble floor tiling, and every single top-of-the-line thing in a kitchen you can possibly think of.

Considering I spent 25k on a modest kitchen with brand new top of the line Samsung appliances in a fairly large house in a "high-income" area, I’d say these folks are spending 4-5 times what I did. And honestly, my guess might be an underestimate. The elites and upper-middle class have DEEP pockets.