CREE XHP35 HD E2, 1800Lm, 16200cd, 6500 – 7000K, Battery Quantity: 1x 18650 / 2x CR123 / 2x RCR123.
Basically copy coupon, view price history or create e-mail price alert. 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 and price update (UTC):
Banggood
Banggood warehouse is located in China. Only one coupon available!
Link: Banggood product page
1. ($63.49): BANGGOODSD
apply it 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): MEC23, BGEC23, TTxBG10, BRANDNC, BGTORCH, BGdragonBoat, bGhOnEy10, bgshOOp10, BgoFErTaSchInA10, BgcLuBofErtA10, BGFLS15, 4BLF, BGAFF10OFF, BGCuponation10, BG10OFFAFF, BGwhielabel, BGflashlight, BG10OFFAFF1
(there’s a little possibility that old coupon will work)
Price history and price alert
Price history (for all/most countries) for Nitecore EC23 XHP35 HD E2 Flashlight is here. The lowest price was: $37.99.
Price records source(s): Gearbest, 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)).