Great news, I just received some ESP32-S2 , but I ordered the raw component wich is really cheap about 2$ https://www.digikey.com/en/products/detail/espressif-systems/ESP32-S2-WROOM-I/11613181 . I have to design, mill and solder a PCB to test.
If anyone wants to learn how to do that in a 6-month program, I still have a few places for FabAcademy students in AgriLab : http://agrilab.unilasalle.fr/fabacademy/