$11.99 – 10 Inch Precise Contour Gauge (Banggood, Aliexpress: Size 10Inch（254mm）, Color Orange, Package Weight 0.4 kg, Material ABS, Application Woodworking Tracing, Precision 0.01mm (the best price with coupon)).
Latest update shows that 10 Inch Precise Contour Gauge costs $11.99 (in Banggood). Just check coupons out (with price alert and history). Let’s see what best price is ATM.
Latest price update (UTC time):
Banggood ($11.99)
Banggood warehouse is located in China. I can’t find any active coupons for this product in Banggood. I think you want to know if the price is good. IMHO this is a good price, coz it’s lower than average ($12.38)
Link: Banggood product page
Price: $11.99
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGherra, BGDRB18, BGd9ae1e, BGacc181, BGWT15
(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
Here is price history (for all/most countries) for 10 Inch Precise Contour Gauge. The lowest price was: $9.99.
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)).