Working power: 4x AAA 1.5V batteries (not include), Fingerprint read: Semiconductor Sensor, Model:x1, Password function: Support virtual password, Chip Type: Dual Core Driver, Read time: 0.3seconds, Suit for the door thickness about 35 -50mm, Unlock mode: Fingerprint / Password / Smart card / Key, Operating temperature: -25 to 55 Centigrade, Touch screen: IML Material, Material: Aluminium Alloy, Color: Black / red bronze.
Basically copy coupon, view price history or create e-mail price alert. What is best price?
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
Click here to search by yourself. Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China. Well, there is one coupon available right now.
Link: Banggood product page
1. ($65.99): BGe3aa58
just apply this code in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): BGSaleFeb8, BG610fb1
(I don’t think these’re gonna work, but you can try ’em out anyway)
Price history and price alert
Price history (for all/most countries) for X1 Tuya WiFi Electronic Smart Door Lock is here. The lowest price was: $65.31.
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)).