You can get 6Pcs Premium Titanium-Coated HSS 4241 Step Drill Bit Set for $12.99 using coupon code (in Banggood). You can create price alert here, copy coupons and view price history. Let’s see what best price is ATM.
6PCS Premium Titanium-Coated HSS 4241 Step Drill Bit Set by Pro-Drills Variety Pack (1/8″ to 1-3/8″) High-Speed Steel Center Punched Design Ideal for Woodworking and Home Improvement
Latest price update (UTC time):
Banggood ($12.99)
Banggood warehouse is located in China. There is no active coupon in my database right now (for Banggood). Low/high price? Well, this price is higher than average price ($12.53)
Link: Banggood product page
Price: $12.99
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
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
Do you need price history chart (for all/most countries) for 6Pcs Premium Titanium-Coated HSS 4241 Step Drill Bit Set? There we go.
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)).