17.99 USD – that is current price with coupon for Carbide CNC Router Bit Dual-Blade Woodworking Milling Cutter Both Bearings 8x22x30x77 (in Banggood). Just check coupons out (with price alert and history). What is best price?
Latest coupon code price check (UTC time):
Banggood (17.99 USD)
Banggood warehouse is located in China. Coupons for Carbide CNC Router Bit Dual-Blade Woodworking Milling Cutter Both Bearings 8x22x30x77? Nope, there’re no coupons in Banggood. Price? Hmmm, price is higher than average (which is 15.49 USD right now), so better set price alert down below…
Link: Banggood product page
Price: 17.99 USD
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): BGWDT15, BG259a9f, BGa1359e, BG6e5da5
(I don’t think these’re gonna work, but you can try ’em out anyway)
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).