According to my DB the lowest price is 65.99 USD for H300 XHP50.2 (in Banggood). You can create price alert here, copy coupons and view price history. Let’s see what best price is ATM.
Latest price update (UTC time):
Banggood (65.99 USD)
Banggood warehouse is located in China. I couldn’t find any coupon for this product on latest product update. Well, is it a good price anyway? Hmmm, price is higher than average (which is 59.83 USD right now), so better set price alert down below…
Link: Banggood product page
Price: 65.99 USD
Old coupons (from the oldest to the newest): BANGGOODSD, FIN6756, BGTorch4, 00c906, BGtorch2, BGtorch3, BGAlerabat15, BGtorch7, BGCAPITALOS8, BG8FORMULAMX, BGd57765
(there’s a little possibility that old coupon will work)
Aliexpress
Click here… to search for SKILHUNT H300 XHP50.2 Headlamp on Aliexpress
Here are coupons that you can use.
Price history and price alert
Here is price history (for all/most countries) for SKILHUNT H300 XHP50.2 Headlamp.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).