Aliexpress
Click here… to search for TRONXY X5SA-400 PRO 3D Printer on Aliexpress
Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China. Only one coupon available!
Link: Banggood product page
Coupon (564.99 USD): BG807222
(CouponsFromChina.com tip: paste coupon code in your cart and click Apply 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): bGpAnDacHeCk, Email5, BGAFF10OFF, 7d18f7, 13f142
(these coupons are old, so probably won’t work)
Price history and price alert
Do you need price history chart (for all/most countries) for TRONXY X5SA-400 PRO 3D Printer? There we go.
Price records source(s): Gearbest, Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).