Use coupon and get 4pcs SCLCR/L SCMCN 12mm Lathe Boring Bar Turning Tool Holder for $19.99 (from Banggood). Basically copy coupon, view price history or create e-mail price alert. What is the best price?
Insert Grade: YBC251, Insert Side Length: 10 mm, Insert Model: CCMT09T304, Quantity: 10 Pcs, Insert Thickness: 4 mm, CCMT09T304 Carbide Inserts:
Latest coupon code price check (UTC time):
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… I think you want to know if the price is good.
Link: Banggood product page
Price: $19.99
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGGines, BG546f56, BGMCT01, BGTACC18, BG589b2e, BGHTT15, BG20236Tool, BG8FORMULAMX
(you can check these old coupons out, but these probably won’t 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
Check out price history chart (for all/most countries) for 4pcs SCLCR/L SCMCN 12mm Lathe Boring Bar Turning Tool Holder.
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)).