Better deal than a loot box (and more legal): $16.99 at Banggood. Updated: 13-12-2025.
TRX30 Bluetooth 5.2 Transceiver Audio Transmitter Receiver
Banggood warehouse: China.
Price: $16.99
Additional Banggood coupons:
1. First page
2. Second page
I could not find it on Aliexpress. Click here to search by yourself.
Here are coupons that you can use.
Price history and price alert
Here is price history (for all/most countries) for TRX30 Bluetooth 5.2 Transceiver Audio Transmitter Receiver. 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)).