Latest update shows that Sonoff POW Elite 16A Smart Wifi Power Meter Switch costs $16.99 (in Banggood). Get coupons, create price alert or check price history out! What is the best price?
Latest coupon and price update (UTC):
Casing Material: PC V0, Input/Output: , POWR316D: 100-240V~50/60Hz 16A Max, Wi-Fi: IEEE 802.11 b/g/n 2.4GHz, Model: POWR316D/POWR320D, Product type: Smart Power Meter Switch, POWR320D: 100-240V~50/60Hz 20A Max, Brand: Sonoff, Color: White, Dimension: 98×54×31mm
Banggood ($16.99)
Banggood warehouse is located in China. I have no active coupons for you right now. I think you want to know if the price is good. It looks like it’s a good price (lower than average ($18.03)).
Link: Banggood product page
Price: $16.99
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGHU2510, Cuponation9, BGHU2515, BG8ReviTrage, BGc99ed5, BG583659, BG89a7ae
(probably won’t work, but you can try them out)
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Price history and price alert
Price history (for all/most countries) for Sonoff POW Elite 16A Smart Wifi Power Meter Switch is here.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).