Just check coupons out (with price alert and history). Let’s see what best price is ATM.
Color: Yellow/Blue(Optional), Material: Plastic, Size: 2″/3.5″/4″/5″, Brush Handle Type: Hexagonal, Brush Wire Material: PP
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):
Banggood
Banggood warehouse is located in Europe 
. I don’t really know if this price is reasonable, coz there’s no price history in my DB.
Link: Banggood product page
1. ($13.16): BGGines
2. ($13.74): BG00c906
just apply this code in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BANGGOODSD, 00c906, BGTools8, BGTACC18
(there’s a little possibility that old coupon will work)
Price history and price alert
Not enough data to show price history chart… $9.99 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)).