Aliexpress
Click here… to search for POWKIDDY RGB10 MAX RK3326 64GB Game Console on Aliexpress
Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China. Well, there is one coupon available right now.
Link: Banggood product page
Coupon (160.08 USD): BG717000
(CouponsFromChina.com tip: apply it in your cart 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): BG10MAX1, BG2dbb53, BGJOEAB, BG14dfa2, BG10MAXA, BG8564f6, BGJPMNMAX64, BGHONEY2110, BGJPYS7A, 7bcdf9, BGJPMAXA, BGJP8MBB, BG26afd3, BGd246b0, BGJP9MAX2, BGd0b05d, BGAlerabat5
(there’s a little possibility that old coupon will work)
Price history and price alert
Price history (for all/most countries) for POWKIDDY RGB10 MAX RK3326 64GB Game Console is here.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).