According to my DB the lowest price is 7.99 USD for External Sound Card (in Banggood). Check coupons or create price alert down below. You probably want to know what is the best price?
Latest coupon code price check (UTC time):
Banggood (7.99 USD)
Banggood warehouse is located in China. There are no coupons available at this moment in Banggood. You probably want to know if this is a good price. Hmmm, price is higher than average (which is 5.72 USD right now), so better set price alert down below…
Link: Banggood product page
Price: 7.99 USD
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): Cuponation9, BG00c906, BG975636, BG589b2e
(you can check these old coupons out, but these probably won’t work)
Aliexpress
Click here… to search for USB 2.0 External Sound Card 20cm on Aliexpress
Here are coupons that you can use.
Price history and price alert
Here is price history (for all/most countries) for USB 2.0 External Sound Card 20cm.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).