When I was updating this page, then coupon price was $14.99 for ETOPOO Woodworking Triangle Angle Ruler Aluminum (in Banggood). Price history, coupons and price alert are available on this page. Best price?
Latest coupon and price update (UTC):
ETOPOO Woodworking Triangle Angle Ruler Aluminum Alloy 90 45 Degree Accuracy For Woodworkers Precision Measurement Tool – Sliver
Banggood ($14.99)
Banggood warehouse is located in China. Hmmm… There is no active coupon in Banggood at this moment. Well, is it a good price anyway? Well, this price is higher than average price ($11.99)
Link: Banggood product page
Price: $14.99
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGWDT15
(there’s a little possibility that old coupon will work)
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Price history and price alert
Do you need price history chart (for all/most countries) for ETOPOO Woodworking Triangle Angle Ruler Aluminum? There we go.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).