Charging Time 6 hours, Battery Capacity 2600mAh, Brand Xiaomiyoupin-LOFANS, Product Name Doughnut Refrigerator Deodorant, Product Size 107 (L) × 107(M) × 51(H), Service Time About 15 days (deodorization mode) / about 7 days (deep deodorization mode), Product Model B3, Color Beige/blue.
Basically copy coupon, view price history or create e-mail price alert. 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 and price update (UTC):
Banggood
Banggood warehouse is located in China. I couldn’t find any coupon for this product on latest product update.
Link: Banggood product page
Price: $-3
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): BG527a36, 2022ACTIESNL, Terence, Tabby20, 2203ActiesNL, BG1efeb0, 8Couponsde, MVC8SPRING, 8BGwbg2204, tRaDetRaCKeR, 8wEbgaInS5
(these coupons are old, so probably won’t work)
Price history and price alert
Do you need price history chart (for all/most countries) for Lofans Car Refrigerator Deodorizer Air Purification? There we go. The lowest price was: $9.99.
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)).