Current(A) 4A±0.3A, Voltage(V) DC 11V-30V, Bulb Socket H4, Certificates CE / RoHs, Working temperature -40℃~+90℃, Lumen 20000LM/Pair(10000LM/Bulb), Color Temperature 6000K White, Material Red Copper + Aluminium Alloy, Waterproof And Dustproof Rated IP68, Cooling Built-in Fan, LED Chips Automotive Grade LED Chips, Super Long Service Life ≥100 /000 Hours, Wattage 100W/Pair(50W/Bulb).
Price history, coupons and price alert are available on this page. What is the 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 coupon right now! Check this out.
Link: Banggood product page
1. ($57.59): BGAMMT03
you should apply the coupon in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/i1u
Old coupons (from the oldest to the newest): BGAUTO22, BGdcbfa8, BGbe4bf7, BG8ReviTrage, Cuponation9, BGSCM75, BG6ff77d, BG589b2e, BGSCM11, BGCL313, BGCAR639, BG7c8541
(these coupons are old, so probably won’t work)
Price history and price alert
Here is price history (for all/most countries) for NOVSIGHT A397-F06 100W 6000K Car Headlights Bulbs H4. The lowest price was: $29.99.
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)).