AnkerDirect via Amazon has 6 feet Anker Powerline+ USB C to USB C Cable on sale.
Price is $9.99 after you apply coupon code "ANKERCCO" at checkout with Free Shipping for Prime Members or if you spend $25 or more.
Also Amazon has Anker Powerline II USB C to USB C Cable (6 ft) for $6.99 after coupon "ANKERCC4"
Smart Note: This offer is valid until Saturday, Nov 30, 2019 or anytime before that. Check the price before you make a purchase.