When I was updating this page the price was 14.39 USD for Horticulture Watering Spray Nozzle (in Banggood). You can create price alert here, copy coupons and view price history. Best price?
Latest coupon code price check (UTC time):
Banggood (14.39 USD)
Banggood warehouse is located in China. Well, is it a good price anyway? Maybe there’re no more promotions for this item, because current price is higher than average (which is equal 12.79 USD) Well, there is one coupon available right now.
Link: Banggood product page
Price without coupon: 15.99 USD
Coupon (14.39 USD): BGAMMT03
(CouponsFromChina.com tip: put item in your cart and apply coupon code there after clicking “Proceed to checkout”. Click to copy code and open shop)
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): BGSCM11
(these coupons are old, so probably won’t work)
Aliexpress
Here are coupons that you can use.
Price history and price alert
Do you need price history chart (for all/most countries) for Horticulture Watering Spray Nozzle? There we go.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).