When I was updating this page the price was 9.99 USD for COMFAST CF-B03 USB Bluetooth (in Banggood). Go down and check coupons out. Remember to check price history if it is available. You probably want to know what is the best price?
Latest coupon and price update (UTC):
Banggood (9.99 USD)
Banggood warehouse is located in China. I’m afraid that there’s no working coupon in Banggood. Isn’t it too expensive? This price is great, coz it’s the lowest in CouponsFromChina database!
Link: Banggood product page
Price: 9.99 USD
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Aliexpress
Click here… to search for COMFAST CF-B03 USB Bluetooth 5.1 Adapter on Aliexpress
Here are coupons that you can use.
Price history and price alert
Price history (for all/most countries) for COMFAST CF-B03 USB Bluetooth 5.1 Adapter is here.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).