I can’t speak for the product, but looks like a good price if it does it’s job. A USB Type-C™/Thunderbolt 3 cable is included.

Description:
With this Monoprice Thunderbolt™ 3 Dual DisplayPort® Adapter allows you to connect two DisplayPort® monitors to your Thunderbolt 3 equipped laptop or desktop computer. The 40Gbps bandwidth of the Thunderbolt 3 standard allows for two displays at resolutions up to 4K@60Hz or a single display at 5K@60Hz. It is compatible with the DisplayPort 1.2 standard and draws all the power it needs from the Thunderbolt port connection. It measures only 2.9" x 1.9" x 0.6", small enough to fit in a pocket or purse. A USB Type-C™/Thunderbolt 3 cable is included to connect the adapter to your PC