Current 3A±10%, Wattage 70W/pair, Product theoretical life 100 /000 hours, Lamp beads/light source Automotive grade chips, Color temperature 6500K, Applicable ambient temperature -40℃~﹢80℃, Applicable voltage 9V-32V, Product light body material aviation aluminum (6063), Lumen value 15000LM/pair, Waterproof grade IP68.
You can create price alert here, copy coupons and view price history. What is best price?
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
Click here to search by yourself. 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
1. ($35.99): BGAMMT03
just apply this code in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): BGa35126, BGSCM75, BG6ff77d, BG589b2e, BGSCM11, BGCL313, BGCAR639, BG094cf4
(these coupons are old, so probably won’t work)
Price history and price alert
Check out price history chart (for all/most countries) for NOVSIGHT A500-N50 H4/H13/9007 35W 7500lm 2Pcs LED Car Head Lights. The lowest price was: $18.99.
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)).