Aliexpress
Click here… to search for HOCO Z3 Dual Car Charger 3.1A on Aliexpress
Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China. There is one great coupon!
Link: Banggood product page
Coupon (6.02 USD): AFfbG10
(CouponsFromChina.com tip: paste coupon code in your cart and click Apply after clicking “Proceed to checkout”. Click to copy code and open shop)
Old coupons (from the oldest to the newest): 502C6B, TTxBG10, 2019SPEDM, BG3CSUM, bgssaff9
(these coupons are old, so probably won’t work)
Price history and price alert
Do you need price history chart (for all/most countries) for HOCO Z3 Dual Car Charger 3.1A? There we go.
Price records source(s): Gearbest, Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).