I have just checked coupons. The lowest price I could get is 16.99 USD for Bit Dual-Blade Woodworking Milling (in Banggood). Go down and check coupons out. Remember to check price history if it is available. What is the best price?
Latest coupon code price check (UTC time):
Banggood (16.99 USD)
Banggood warehouse is located in China. I don’t think there is an active coupon right now – at least in my database. I think you want to know if the price is good. This price is higher than average price (15.49 USD) for this item.
Link: Banggood product page
Price: 16.99 USD
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): BGWDT15, BG259a9f, BGa1359e, BG6e5da5
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Aliexpress
Click here… to search for Carbide CNC Router Bit Dual-Blade Woodworking Milling Cutter Both Bearings 8x22x30x77 on Aliexpress
Here are coupons that you can use.
Price history and price alert
Here is price history (for all/most countries) for Carbide CNC Router Bit Dual-Blade Woodworking Milling Cutter Both Bearings 8x22x30x77.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).