I have checked all old coupons and price is $18.99 for Smart Switch Button Pusher Fingerbot (in Banggood). Check coupons or create price alert down below. What is the best price?
Stall Torque: 1.6 kgf-cm, Charging cable: No include, Battery Capacity: 500 mAh, Charging Port: USB Type-C, App: Smart Life/Tuya Smart, Working Temperature: -10 ±45℃, Wireless protocol: Bluetooth 4.2, Maximum Movement: 8mm, Bluetooth signal distance: ＜10 m, Work Mode: Click / Switch, Dimensions: 48x 37x 33 mm
Latest coupon and price update (UTC):
Banggood ($18.99)
Banggood warehouse is located in China. As you can see I didn’t find any active coupon for this product right now… Low/high price? This price is higher than average price ($15.53) for this item.
Link: Banggood product page
Price: $18.99
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGXIFD646, BGXIFD751
(system checks these coupons on every price check (like once per 24 hours), 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
Price history (for all/most countries) for Smart Switch Button Pusher Fingerbot 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)).