Aukey 18W USB-C Charger with Power Delivery 3.0 $6.99 at Amazon
Amazon with STSS has the Aukey 18W USB-C Charger with Power Delivery 3.0 (PA-Y15-US) for $14.99 - $8 off coupon (check "Apply coupon" box)*=
$6.99 with free shipping on $25+ or with Prime.
27W version (PA-Y8-US)*is on sale for
$8.99 after $10 off coupon.*
Original Source of Info