Quantities may be limited but ESP32 boards are "here." Bare modules are a little under $10. https://www.adafruit.com/products/3320 https://www.adafruit.com/pro

Quantities may be limited but ESP32 boards are "here." Bare modules are a little under $10. https://www.adafruit.com/products/3320 https://www.adafruit.com/products/3320 https://www.adafruit.com/product/3269 https://www.adafruit.com/product/3269 https://www.sparkfun.com/products/13907 https://www.sparkfun.com/products/13907