Aliexpress
Click here… to search for Fireflies E01 SST40W N5 5700K Flashlight on Aliexpress
Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China. There is one great coupon!
Link: Banggood product page
Coupon (32.98 USD): cbrIDgTec
(CouponsFromChina.com tip: just apply this code in your cart after clicking “Proceed to checkout”. Click to copy code and open shop)
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): BGFFK, linepayflt, BGFFE01, EYBG, FINE01, BG13TH, BGF1111, FIN8OIP
(probably won’t work, but you can try them out)
Price history and price alert
Check out price history chart (for all/most countries) for Fireflies E01 SST40W N5 5700K Flashlight.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).