Ruler with Drilling is for 11.99 USD (in Banggood). Price history, coupons and price alert are available on this page. Let’s see what best price is ATM.
Latest coupon and price update (UTC):
Banggood (11.99 USD)
Banggood warehouse is located in China. There are no active coupons for this product, but the price is pretty low isn’t it? Price? Maybe there’re no more promotions for this item, because current price is higher than average (which is equal 6.49 USD)
Link: Banggood product page
Price: 11.99 USD
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): BGWDT15
(system checks these coupons on every price check (like once per 24 hours), but you can check them out anyway)
Aliexpress
Click here… to search for Tile Multi Angle Measuring Ruler with Drilling Locator on Aliexpress
Here are coupons that you can use.
Price history and price alert
Price history (for all/most countries) for Tile Multi Angle Measuring Ruler with Drilling Locator is here.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).