How much does this cost to the nearest dollar?

AITRIP 3pcs for core Board ESP32 Development Board Compatible with Arduino IDE
description： This guide shows how to start using the V4 development board. For description of other versions of check ESP32 Hardware Reference. What You Need V4 board USB A / micro USB B cable Computer running Windows, Linux, or macOSYou can skip the introduction sections and go directly to Section Start Application Development. Overview V4 is a small-sized development board produced by Espressif. Most of the I/O pins are broken out to the pin headers on both sides for easy interfacing. Developers can either connect peripherals with jumper wires or mount V4 on a breadboard. To cover a wide range of user requirements, the following versions of V4 are available different ESP32 modules (IPEX)

Price is $18.00
Price: $17.99