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Click here… to search for Anycubic I3 MEGA 3D Printer EU Plug on Aliexpress
Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China. There is one coupon available! Pretty cool, huh?
Link: Banggood product page
Coupon (342.99 USD): Email5
(CouponsFromChina.com tip: paste coupon code in your cart and click Apply after clicking “Proceed to checkout”. Click to copy code and open shop)
Old coupons (from the oldest to the newest): Wholesale20, BGAnycubic1, bGpAnDacHeCk
(these codes were not working in latest coupon update, but you can check them out anyway)
Price history and price alert
Check out price history chart (for all/most countries) for Anycubic I3 MEGA 3D Printer EU Plug.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).