Basically copy coupon, view price history or create e-mail price alert. Do you want to know what the best price is?
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest price update (UTC time):
Weight: 500g, Lead Hardness: 2H 3H 4H 4H HB 2B 3B 4B 5B 6B 8B, Quantity: 23 Pcs/set, Model Number: HB-SDTB23, Material: Wood, Application: Artist Design/ Coloring Books / Cartoons/ Christmas Gift, Package Box Size: 18.9*33.5*2.1cm, Type: Sketch Pencils, Brand: H&B
Banggood
Banggood warehouse is located in Europe 
. Coupons for H&B HB-SDTB23 Sketch Drawing Pencil Set [EU]? Nope, there’re no coupons in Banggood. I can’t tell you if this price is good – not enough records in my database, so I won’t judge.
Link: Banggood product page
Price: $-3
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGHB690, bGhOnEy10, BgcLuBofErtA10, BGAFF10OFF, BGCuponation10, 13f142, BGSD543, BGHONEY2110
(there’s a little possibility that old coupon will work)
Price history and price alert
Not enough data to show price history chart… $11.99 is the only recorded price. It was not cheaper than that since we have saved it in DB.
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)).