You can create price alert here, copy coupons and view price history. What is best price?
Nozzle Max temperature 275°C, Print accuracy 0.1-0.2mm, Max print speed 100mm/s, Carbon Fiber, ABS, Dual Z-axis Yes, Power Supply 40W-280W 220V, Copper, Structure Material 2040 Aluminum extrusion, Power Plug Plug EU Standard(Default), LCD display 3.5inch, Printing size 300*300*400 with magnetic buildplate, XY-axis positioning accuracy 0.012mm, Z-axis positioning accuracy 0.004mm, TPU, Nozzle quantiy 1pc, Wood, Layer height 0.1-0.4mm, Filament size 1.75mm, Nozzle size 0.4mm, Filament support PLA, etc, Net weight 13kg
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China. One coupon is available. Cool!
Link: Banggood product page
1. ($424.99): 7d18f7
paste coupon code in your cart and click Apply after clicking “Proceed to checkout”. Click to copy code and open shop)
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): 5232e8, Wholesale20, TTxBG10, 4e4e0d, bGpAnDacHeCk, Email5, BG3a9173, BG3DP09B
(you can check these old coupons out, but these probably won’t work)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. China – BIQU Thunder Advanced 3D Printer ($-3)
Price history and price alert
Do you need price history chart (for all/most countries) for BIQU Thunder Standard 3D Printer? There we go.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).