Aliexpress
Click here… to search for BlitzWolf BW-MS4 2pcs Dual Monitor Stand Arms Mount [EU] on Aliexpress
Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in Europe 
. I’m not sure about the price, coz I have only 1 record(s) in my database.
Link: Banggood product page
Coupon (147.46 USD): JanBGCoupon8
Coupon (150.66 USD): BG589b2e
(CouponsFromChina.com tip: 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
There were country-specific coupon codes published on Couponsfromchina social channels and price alerts. Coupon price may vary by country, because there’re different VAT rates, shipping cost etc. There is a chance that some latest coupons are still working:
Old coupons (from the oldest to the newest): BG89d29e, BG522903, BG00c906, BG8OFFCOUPON, TTBLACK5
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Price history and price alert
It doesn’t make sense to generate price history chart, because there is one price record which is: 107.99 USD.
You can set price alert (for Banggood).