Basically copy coupon, view price history or create e-mail price alert. Do you want to know what the best price is?
Max.current: 16A, Max.power: 260W, Weight: 47 grams, Width: 27.9mm, Model: 2212, Usage for 350 380 400 RC Drone FPV Racing, Battery: 2-4S lipo battery, Shaft diameter: M6, Voltage: 8-14.8 V, Height: 39.3mm, Motor mount hole size: 16*19mm, RPM/V: 800KV
Aliexpress
There’re some similar (or not) items on Aliexpress
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. ($10.99): a0e5bc
2. ($20.69): AFfbG10
3. ($21.38): aff7off
put item in your cart and apply coupon code there 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): TTxBG10, BGss9%rc, bgssaff9, rccle30off
(these coupons are old, so probably won’t work)
Price history and price alert
Here is price history (for all/most countries) for 4Pcs Xiaomi 2212 800KV 2-4S RC 1080p Motors.
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)).