$19.99 – Drillpro 200mm Metric Precision Woodworking Square Aluminum Right Angle Ruler (Banggood, Aliexpress: 1x Right Angle Ruler (the best price with coupon)).
Check if there is $19.99 coupon for Drillpro 200mm Metric Precision Woodworking Square Aluminum Right Angle Ruler (in Banggood). Just check coupons out (with price alert and history). What is best price?
Latest coupon and price update (UTC):
Banggood ($19.99)
Banggood warehouse is located in China. As you can see I didn’t find any active coupon for this product right now… Is it good price? This price is higher than average price ($18.88) for this item.
Link: Banggood product page
Price: $19.99
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/feV
Old coupons (from the oldest to the newest): BG31b0eb, BGDRB18, BGdf1990, BGa52106, BGWT15, BGHID18, BGa0b557, BGc8412f, BG4610a8
(there’s a little possibility that old coupon will work)
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
Click here to search by yourself. Here are coupons that you can use.
Price history and price alert
Here is price history (for all/most countries) for Drillpro 200mm Metric Precision Woodworking Square Aluminum Right Angle Ruler. The lowest price was: $15.99.
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)).