19.99 USD – that is current price with coupon for Tyre Temperature Alarm (in Banggood). Basically copy coupon, view price history or create e-mail price alert. Do you want to know what the best price is?
Latest coupon and price update (UTC):
Banggood (19.99 USD)
Banggood warehouse is located in China. I’m afraid that there’s no working coupon in Banggood. Is it good price? It looks like it’s a good price (lower than average (21.55 USD)).
Link: Banggood product page
Price: 19.99 USD
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): BG18cdc1, BGSCM11, BGAMMT03
(there’s a little possibility that old coupon will work)
Aliexpress
Click here… to search for Motorcycle Solar Charge Tyre Temperature Alarm Sensor on Aliexpress
Here are coupons that you can use.
Price history and price alert
Price history (for all/most countries) for Motorcycle Solar Charge Tyre Temperature Alarm Sensor is here.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).