$15.74*: 4-Pack TP-Link Tapo Mini 15A Smart Wi-Fi Plug at Amazon ($3.94 each)

4-Pack TP-Link Tapo Mini 15A Smart Wi-Fi Plug for $15.74. Shipping is free with Prime or on $35+ orders. Price: $7.25 lower (32% savings) than the typical price of $22.99, $3.80 lower (19% savings) than the previous price of $19.54.