You can create price alert here, copy coupons and view price history. Do you want to know what the best price is?
Working Time (h) 4 hr. playback on 1 charge, Wired USB Type-C (5V 1.2A 6W), bluetooth Chip Kirin A1, 20 hr. playback with charging case, Charging Time (h) 1h, Battery Capacity Charging box: 410mAh, 3.7V, Wireless Qi standard (2W), Earphone: 30mAh*2, Microphone Yes, Dynamic Driver φ14mm, bluetooth Version V5.1, 3.7V, Transmission Distance 10m
Aliexpress
There’re some similar (or not) items on Aliexpress
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. Only one coupon available!
Link: Banggood product page
1. ($240.87): BGBuscape01
this code has to be applied in your cart 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): BGHUA11, BGBFAFF2019, BGCITYADS2019, AFfbG10, BGBUDS3, BGVDay10%off, EARSP11, BGAFF10OFF, BGTT10, bGhOnEy10, Email5, BGSS10%SW, bgshOOp10, BGELIG0920, BG11SHOP, BG11PP12, 7d18f7, BG4BW25, BGLOAC1, 13f142, BGa0b145
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Price history and price alert
Price history (for all/most countries) for Huawei Freebuds 3 TWS Earphones is here.
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)).