Aliexpress
Click here… to search for NB F160 Dual Monitor Laptop Stand on Aliexpress
Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
Coupon (91.99 USD): hoNEYbGdeAlS
Coupon (93.99 USD): BG00c906
(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): bGhOnEy10, bgshOOp10, BGKSJDASA, BHGSNFJA, BgoFErTaSchInA10, BgcLuBofErtA10, BGAFF10OFF, BGE53953, BGCuponation10, 13f142, BGHONEY2110, BGNBF160, BG8521af, BG552184, BG303eda, BG298fe8, BANGGOODSD, 6GSGIT, ADMITAD2212, 2022ACTIESNL, 8wEbgaInS5, pROMo8cuPoN
(these coupons are old, so probably won’t work)
Price history and price alert
Price history (for all/most countries) for NB F160 Dual Monitor Laptop Stand is here.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).