Amazon, Walmart, and Target have the Offical Apple USB-C Charge Cable (2m) for $13.99 (regularly $19) for a limited time.
This 2-meter charge cable — with USB-C connectors on both ends — is ideal for charging USB-C devices, and also supports USB 2 for syncing and data transfer between USB-C devices. To conveniently charge your MacBook or MacBook Pro from a wall outlet, pair the USB-C Charge Cable with a compatible USB-C power adapter (sold separately).