Going to Japan is a several thousand dollar commitment for the average American/European, is it not?
That being said, it's all relative to income. Wages are low in Japan, and taxes are higher. Wages have also remained flat ever since the 90s when the bubble burst, and Japan hasn't experienced any inflation until this year. Meanwhile inflation has continued in Europe and north America, so travel has consistently gotten relatively more expensive to a Japanese person.
Imported goods have been adjusted already. Regular unleaded petrol is around 170 yen per litre around Tokyo.
Accommodation and food prices seemed to be roughly around the same as before, but I did note some bottled soft drinks seemed to come in smaller sizes than before (450ml vs 500ml).
Checking my notes again just now, I did see the Nest Mini 2nd Gen for ¥2980, but that seems to be part of a Christmas promotion going on, so not a useful data point.
Perhaps only subjectively, depending on where you go.
Energy is typically the backbone of any modern country, and the price level being fixed by OPEC allows several comparisons that are accurate.