I have checked all old coupons and price is 27.99 USD for 12mm Shank Lathe Boring (in Banggood). Basically copy coupon, view price history or create e-mail price alert. Do you want to know what the best price is?
Latest coupon code price check (UTC time):
Banggood (27.99 USD)
Banggood warehouse is located in China. There are no coupons for this product in Banggood. You probably want to know if this is a good price. IMHO this is a good price, coz it’s lower than average (31.21 USD)
Link: Banggood product page
Price: 27.99 USD
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): BGTools8, BG3155e7, BGMCT01, BGMACHI06, BGTACC18, BGGines, BG589b2e, BGHTT15, BG20236Tool, BG8FORMULAMX
(system checks these coupons on every price check (like once per 24 hours), but you can check them out anyway)
Aliexpress
Click here… to search for Machifit 7pcs 12mm Shank Lathe Boring Bar Turning Tool Holder Set 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 Machifit 7pcs 12mm Shank Lathe Boring Bar Turning Tool Holder Set? There we go.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).