Aliexpress
Click here… to search for Satlink WS-6916 Digital Satellite Finder on Aliexpress
Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China. I found coupon for you. Check this out.
Link: Banggood product page
Coupon (153.14 USD): BGherra
(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): 062664, 502C6B, e2bcea, TTxBG10, 2019SPEDM, bgssaff9, AFfbG10, BGBFAFF2019, BGCITYADS2019, 7bcdf9, BGMPB2020, BGAFF10OFF, bGhOnEy10, 7d18f7
(these codes were not working in latest coupon update, but you can check them out anyway)
Price history and price alert
Check out price history chart (for all/most countries) for Satlink WS-6916 Digital Satellite Finder.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).