Thumb Score: +14 Amazon [amazon.com] has Official Apple 20W USB-C Power Adapter (White; MHJA3AM/A) on sale for $15.99. Shipping is free with Prime or on orders $25+. Walmart [walmart.com] has Official Apple 20W USB-C Power Adapter (White; MHJA3AM/A) on sale for $15.99. Shipping is free with Walmart+ (free trial [walmart.com]) or on orders $25+.