Just check coupons out (with price alert and history). What is the best price?
ABS, Vacuum Cleaner Parts, 0.048kg, XIAOMI Roborock S7 S7MAX S7MAXV S70 S75 Vacuum Cleaner
Aliexpress
There’re some similar (or not) items on Aliexpress
| Image | Product (link) | Price | Coupons |
|---|---|---|---|
 |
15PCS For roborock accessories S7 for s7s s7max s7maxv S70 S75 t7s t7s mop pad accessories Replacement | $14.05 | – |
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. ($29.99): BGHU2299
2. ($32.48): Cuponation9
3. ($32.83): hoNEYbGdeAlS
4. ($32.83): DealBGimpact
5. ($33.55): BG00c906
paste coupon code in your cart and click Apply 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): BG76cd4a, 00c906, ADMITAD2212, 2022ACTIESNL, Terence, BGmarB07, Tabby20, 2203ActiesNL, BG1efeb0, 8Couponsde, MVC8SPRING, pROMo8cuPoN, BGJUNEGSG9
(I don’t think these’re gonna work, but you can try ’em out anyway)
Price history and price alert
Check out price history chart (for all/most countries) for 15pcs Replacements for Roborock S7 S7MAX S7MAXV S70 S75 Vacuum.
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)).