Aliexpress
Click here… to search for Xiaomi Maiwei Car Air Freshener Set on Aliexpress
Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China. One coupon is available. Cool!
Link: Banggood product page
Coupon (22.40 USD): BG10OFFAFF1
(CouponsFromChina.com tip: just apply this code in your cart after clicking “Proceed to checkout”. Click to copy code and open shop)
Old coupons (from the oldest to the newest): 502C6B, BgAuMotor, aff7off, TTxBG10, AM15prime, AMPrime01, Automo, Automo1, BGAutos, bGhOnEy10, BGCARELEC, BGAFF10OFF, BGCuponation10, 13f142, BGHONEY2110, BG10OFFAFF, BGwhielabel
(probably won’t work, but you can try them out)
Price history and price alert
Do you need price history chart (for all/most countries) for Xiaomi Maiwei Car Air Freshener Set? There we go.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).