According to my DB the lowest price is $92.99 for SONOFF NSPanel Pro Smart Home Control Panel Wall Switch (in Banggood). Price history, coupons and price alert are available on this page. Let’s see what best price is ATM.
Latest coupon and price update (UTC):
SONOFF NSPanel Pro Smart Home Control Panel Smart Scene Wall Switch Voice Control Smart Home Thermostat Display Switch Works with Alexa EU Version – Black
Banggood ($92.99)
Banggood warehouse is located in China. There are no active coupons for this product, but the price is pretty low isn’t it? Is it cheap? This price is higher than average price ($91.49) for this item.
Link: Banggood product page
Price: $92.99
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
There were country-specific coupon codes published on Couponsfromchina social channels and price alerts. Coupon price may vary by country, because there’re different VAT rates, shipping cost etc. There is a chance that some latest coupons are still working:
1. (29.11.2024, $85.99): BG646c08
Item: SONOFF NSPanel Pro Smart Home Control Panel Wall Switch
Countries: Belgium, France, Luxembourg
2. (29.11.2024, $81.96): BG8e7b86
Item: SONOFF NSPanel Pro Smart Home Control Panel Wall Switch
Countries: France, Italy
3. (28.11.2024, $78.85): BGc0f804
Item: SONOFF NSPanel Pro Smart Home Control Panel Wall Switch
Countries: Germany
4. (14.8.2024, $87.99): BGe6ec4f
Item: SONOFF NSPanel Pro Smart Home Control Panel Wall Switch
Countries: Belgium, France, Italy
Old coupons (from the oldest to the newest): BGREUPSNF5
(these codes were not working in latest coupon update, but you can check them out anyway)
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
Do you need price history chart (for all/most countries) for SONOFF NSPanel Pro Smart Home Control Panel Wall Switch? There we go.
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)).