The educational materials, documentation, and software support are the main reason for the markup. I really enjoy the Espressif boards, but I have faced many un

The educational materials, documentation, and software support are the main reason for the markup. I really enjoy the Espressif boards, but I have faced many undocumented bugs or incomplete features on them and have had to frequently manually modify the IDE for them to work. No such problems with Arduino/Adafruit/Sparkfun, which also create high quality educational materials (and yes, cost 4x (not 10x) more).