Aliexpress
Click here… to search for LA03-5500 5500mW 445nm Blue Laser Module w/ Heat Sink [EU] on Aliexpress
Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in Europe 
. Uhm… There’s no price history (in my database) for this product right now. Well, there is one coupon available right now.
Link: Banggood product page
Coupon (178.59 USD): BG589b2e
(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): BG92afd8
(there’s a little possibility that old coupon will work)
Price history and price alert
There is only one database record (it was for 99.99 USD), so you can’t see price history chart.
You can set price alert (for Banggood).