I have just checked coupons. The lowest price I could get is 13.99 USD for T69 2.4G Wireless (in Banggood). Basically copy coupon, view price history or create e-mail price alert. You probably want to know what is the best price?
Latest coupon and price update (UTC):
Banggood (13.99 USD)
Banggood warehouse is located in China. As you can see I didn’t find any active coupon for this product right now… Is it a low price? Maybe there’re no more promotions for this item, because current price is higher than average (which is equal 13.49 USD)
Link: Banggood product page
Price: 13.99 USD
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): BGa3913e
(I don’t think these’re gonna work, but you can try ’em out anyway)
Aliexpress
Click here… to search for HXSJ T69 2.4G Wireless Gaming Mouse on Aliexpress
Here are coupons that you can use.
Price history and price alert
Price history (for all/most countries) for HXSJ T69 2.4G Wireless Gaming Mouse is here.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).