$6.99 – Dual USB Car MP3 Player Fast Charger (Banggood, Aliexpress: Dual USB Car MP3 Player Fast Charger FM bluetooth Receiver Compatible 5.0 FM Transmitter USB Flash Drive Plug Car Kit – Black (the best price with coupon)).
Use coupon and get Dual USB Car MP3 Player Fast Charger for $6.99 (from Banggood). You can create price alert here, copy coupons and view price history. You probably want to know what is the best price?
Latest coupon code price check (UTC time):
Banggood ($6.99)
Banggood warehouse is located in China. The question is – is it a good price? This is the best price in history according to CouponsFromChina database! Basically there’re 3 active coupon codes available!
Link: Banggood product page
Price without coupon: $12.99
1. ($6.99): BG15656a
2. ($7.50): BGa74ef0
3. ($12.34): BGCARCE1
put item in your cart and apply coupon code there after clicking “Proceed to checkout”. Click to copy code and open shop.
This is the best price ever noted in my database!
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/i1u
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
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 Dual USB Car MP3 Player Fast Charger. The lowest price was: $6.99.
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)).