Scroll down to compare the ESP32 Development Board prices at different stores.
Aliexpress.com
Banggood.com
Ebay.com
$15.99
1 new
from $15.99
as of October 31, 2019 7:52 pm
Amazon.com
£13.99
1 new
from £13.99
as of October 31, 2019 7:52 pm