Aliexpress
Click here… to search for GPD XD Plus 4/32GB Game Console [EU] on Aliexpress
Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in Europe 
. CouponsFromChina software could not find any coupon for this product in Banggood. I don’t know if this is a good price – number of records in my database is too low!
Link: Banggood product page
Price: -3 USD
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Old coupons (from the oldest to the newest): a33af9, df6962, bdcf28, aff7off, bgchinafest, BG843fb5, BG46e4bd, BG000b36, Email5, BGf6d6fd, 7d18f7, 13f142, BGae0a6f
(these codes were not working in latest coupon update, but you can check them out anyway)
Price history and price alert
Well, you won’t see price history chart, coz we have only 1 database record for this item (and price was 179.99 USD).
You can set price alert (for Banggood).