You can get Picun ANC-05L ANC Headset for $49.99 using coupon code (in Banggood). You can create price alert here, copy coupons and view price history. Best price?
Picun ANC-05L ANC Headset bluetooth Headphone Active Noise Cancelling 40mm Large Driver 1000mAh Long Battery Life Portable Headphone – Black
Latest coupon and price update (UTC):
Banggood ($49.99)
Banggood warehouse is located in China. Hmmm… There is no active coupon in Banggood at this moment. Low/high price? Well, this price is higher than average price ($30.49)
Link: Banggood product page
Price: $49.99
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
There were country-specific coupon codes published on Couponsfromchina social channels and price alerts. Coupon price may vary by country, because there’re different VAT rates, shipping cost etc. There is a chance that some latest coupons are still working:
1. (29.12.2023, $37.99): BG2e79f5
Item: Picun ANC-05L ANC Headset
Countries: CzechRepublic, Hungary, Slovakia(SlovakRepublic), Slovenia
2. (29.12.2023, $37.99): BGPL28DEC03
Item: Picun ANC-05L ANC Headset
Countries: Poland
3. (27.12.2023, $37.99): BGRDECPC05
Item: Picun ANC-05L ANC Headset
Countries: Greece
Old coupons (from the oldest to the newest): BGXIFD440, BGAudio3, BGAudio9
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Price history and price alert
Price history (for all/most countries) for Picun ANC-05L ANC Headset 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)).