Aliexpress
Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in Europe 
. There’s only 1 record in my database, so I have no idea if the price is OK.
Link: Banggood product page
Coupon (639.99 USD): BGissamfd2
Coupon (639.99 USD): BG1d5093
(CouponsFromChina.com tip: you should apply the coupon 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): BGFDD2SEU, PICODICOM, BGFDD2SEU19, BGFDD2SEU11, 519a1e, BGFDD2SEUB5, BGFDD2SEUXM, bGpAnDacHeCk, 2880c7, Wholesale20, 7bcdf9, EUBGFDD2S78, ISSAMEUFDD2S78, BGFDD2SEU8, BG9AD2S, BGD2SUKD, BGD2SEU, BGEBSC15, BGFDD2SCZ, BGD17issa, BG10OFFAFF, BGD2SDYF, BGwhielabel, D2S2021UK, BGD17issa1, D2S2021CZ, BG893405, BGdd98a0, BG10OFFAFF1, BGfd805f, BG2079f1, BG79dbc1, BG83dd17, BGd56b2e, BGfd3dde, BG606da1, BG7cec30, BG8b7df7, BGf37fb8, BG62d24f, BG4e34ba, BG6f496d, BG619855, BG7881ec, BGbf548d, BGb85257, BGa3347e, BG37bf65, BG64c3f7, BG7f01f8, BGe1f628, BG5d7164, BG88235a, BGf0ce7e, BG9e53d6, BG9c4d0a, BG9004ee, BG749b93, BG988b67, ERidingMarch, BGe8db3b, BG003aa3, BG71ba7a, BG5f0d27, BG231a01, BGe411d8
(system checks these coupons on every price check (like once per 24 hours), but you can check them out anyway)
Price history and price alert
It’s a new item in our database, so I can’t create price history chart. We have saved this price in database: 609.99 USD.
You can set price alert (for Banggood).