$48.99 – RX-009 Professional Knife Sharpener with 4 Whetstones Dual Clamps 360° Rotation Flip Design Fixed-Angle Stainless Steel Kitchen Chef Knife Sharpening Kit Abrasive Holding System Tools.
$48.99 – that is current price with coupon for RX-009 Professional Knife Sharpener with 4 Whetstones (in Banggood). Just check coupons out (with price alert and history). Let’s see what best price is ATM.
Latest coupon and price update (UTC):
Banggood ($48.99)
Banggood warehouse is located in China. I’m afraid that there’s no working coupon in Banggood. Is it good price? This price is higher than average price ($41.60) for this item.
Link: Banggood product page
Price: $48.99
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/i1u
Old coupons (from the oldest to the newest): BGWDT15, BG76cfa1
(these coupons are old, so probably won’t work)
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
Click here to search by yourself. Here are coupons that you can use.
Price history and price alert
Do you need price history chart (for all/most countries) for RX-009 Professional Knife Sharpener with 4 Whetstones? There we go. The lowest price was: $36.99.
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)).