1x Vacuum Cleaner Hepa Filter.
Go down and check coupons out. Remember to check price history if it is available. You probably want to know 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 price update (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($4.58): 12blitzw
2. ($4.73): od7off
put item in your cart and apply coupon code there after clicking “Proceed to checkout”. Click to copy code and open shop.
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): aff7off, vipupgrade8, e2bcea, 502C6B, 1225CAR, bgsport, Accessories, BGss10%bw, bGpAnDacHeCk, 2020CNY, BGVDay10%off, BGBlitzFB, bGhOnEy10, BGBW152, BGAFF7OFF
(these codes were not working in latest coupon update, but you can check them out anyway)
Other warehouses/versions
This item is available in 4 another warehouse/versions!
1. China – Blitzwolf 4x Side Brush Vacuum Cleaner Replacement ($-3)
2. China – Blitzwolf Filter Net Vacuum Cleaner Replacement ($-3)
3. China – Blitzwolf Remote Control Vacuum Cleaner Replacement ($-3)
4. China – Blitzwolf 4x Rolls Brush Vacuum Cleaner Replacement ($-3)
Price history and price alert
Here is price history (for all/most countries) for Blitzwolf Hepa Filter Vacuum Cleaner Replacement. The lowest price was: $4.24.
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)).