Aliexpress
Click here… to search for Drillpro Aluminium Alloy TS 3 Inch Hole Positioning Ruler on Aliexpress
Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China. There is one great coupon!
Link: Banggood product page
Coupon (26.49 USD): BGWDT15
(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): BGherra, BG00c906, BGGines, Tabby20, BG02cf64, BGWT15, BGFON15
(these codes were not working in latest coupon update, but you can check them out anyway)
Price history and price alert
Do you need price history chart (for all/most countries) for Drillpro Aluminium Alloy TS 3 Inch Hole Positioning Ruler? There we go.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).