I have just checked coupons. The lowest price I could get is 16.99 USD for ENJOYWOOD 450mm Aluminium (in Banggood). Basically copy coupon, view price history or create e-mail price alert. Let’s see what best price is ATM.
Latest price update (UTC time):
Banggood (16.99 USD)
Banggood warehouse is located in China. CouponsFromChina software could not find any coupon for this product in Banggood. Low/high price? From what I can see this price is higher than average price (15.49 USD).
Link: Banggood product page
Price: 16.99 USD
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): BGWDT15
(these coupons are old, so probably won’t work)
Aliexpress
Click here… to search for ENJOYWOOD 450mm Aluminium Miter Bar Rail Guage Slider on Aliexpress
Here are coupons that you can use.
Price history and price alert
Do you need price history chart (for all/most countries) for ENJOYWOOD 450mm Aluminium Miter Bar Rail Guage Slider? There we go.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).