2x main brush, 4x HEPA filter, 6x side brush.
Get coupons, create price alert or check price history out! What is the best price?
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.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China. There is one coupon available! Pretty cool, huh?
Link: Banggood product page
1. ($24.53): BGherra
paste coupon code in your cart and click Apply after clicking “Proceed to checkout”. Click to copy code and open shop.
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): BGF20, BGAA95, TA12, TS15prime, BGPTA18, BGHF09, BG2020NS, bGhOnEy10, bgshOOp10, BGHome15%, BGBFCR32, BgcLuBofErtA10, 13f142, BGAFF10OFF
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – 12pcs Xiaomi Vacuum Cleaner Parts [EU] ($-3)
Price history and price alert
Here is price history (for all/most countries) for 12pcs Xiaomi Vacuum Cleaner Parts. The lowest price was: $8.49.
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)).