Aliexpress
Click here… to search for Creality 3D Ultrabase 510x510x4mm Carbon Silicon Glass Plate for CR-10S5 MK2 MK3 [EU] on Aliexpress
Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in Europe 
. I don’t want to misguide you about the price. I don’t know if it’s good, because I don’t have enough records in my database… One coupon is available. Cool!
Link: Banggood product page
Coupon (19.99 USD): BG322010
(CouponsFromChina.com tip: this code has to be applied in your cart after clicking “Proceed to checkout”. Click to copy code and open shop)
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Price history and price alert
It’s a new item in our database, so I can’t create price history chart. We have saved this price in database: 19.99 USD.
You can set price alert (for Banggood).