I have checked all old coupons and price is $6.99 for XH-W3001 10A 12V 24V 220V Temperature Controller [EU] (in Banggood). This is EU warehouse. Basically copy coupon, view price history or create e-mail price alert. Best price?
XH-W3001 10A 12V 24V 220V AC Digital LED Temperature Controller for Incubator Cooling Heating Switch Thermostat NTC Sensor – DC24V-240W
Latest coupon and price update (UTC):
Banggood ($6.99)
Banggood warehouse is located in Europe 
. I have no active coupons for you right now. Is it a reasonable price for this item? I don’t want to misguide you about the price. I don’t know if it’s good, because I don’t have enough records in my database…
Link: Banggood product page
Price: $6.99
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BG00c906, BG589b2e
(there’s a little possibility that old coupon will work)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. China – XH-W3001 10A 12V 24V 220V Temperature Controller ($6.59)
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
Well, you won’t see price history chart, coz we have only 1 database record for this item (and price was $6.99).
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)).