Yes, they are: https://geizhals.de/raspberry-pi-4-modell-b-a2301761.html

75€ until the end of 2021.

Now 86€ as soon as there are new PIs available, note the 8gb model: https://www.berrybase.de/en/raspberry-pi-4-computer-modell-b...

New supply later this year: https://www.raspberrypi.com/news/supply-chain-update-its-goo...