PlayStation 5 has a price increase in August, 2022. I think this was the very first time this happened.
Xbox Series X had one in June, 2023.
Nintendo Switch (original) had a price increase last year.
I don't remember this ever happening before the 2020s unless it was due to retailer shortages or markups.
NEC temporarily raised the price of the TurboExpress due to low screen yields in 1991. That is the only price increase I was able to find.