Scroll down to compare the ESP32 Development Board prices at different stores.
Shrsl.com
Aliexpress.com
Ebay.com
$14.89
1 new
from $14.89
as of May 25, 2018 1:55 pm
Amazon.com
£15.99
1 new
from £15.99
as of May 25, 2018 1:55 pm