Aliexpress
Click here… to search for SJCAM SJ10 Pro Action Camera on Aliexpress
Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
Coupon (207.99 USD): BGdcbfa8
Coupon (220.99 USD): BGAUTO22
(CouponsFromChina.com tip: put item in your cart and apply coupon code there 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): BGEESJ10, bGhOnEy10, BGSJCAMSJ10Pro, BGELIG0920, BgcLuBofErtA10, BGCNA15, BGCDC056, BGSJCAM1110, BGSJCAM1011, BGSJcam0124, BGAFF10OFF, BGSJcam213, BGJP8625, BGCuponation10, BGHONEY2110, BGSJ10PRO1, SJCAM10PRO, BGf23616, BGSJCAM265, 13f142, BG4b5d1e, BGbe9319, BG39c7ab, BG833653, BGd0b05d, BG39d9c8, BGe37a3a, 2022ACTIESNL, Terence, 2203ActiesNL, BG477b0d, tRaDetRaCKeR, BGddbe5d
(probably won’t work, but you can try them out)
Price history and price alert
Price history (for all/most countries) for SJCAM SJ10 Pro Action Camera is here.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).