Just check coupons out (with price alert and history). Do you want to know what the best price is?
Built-in speaker: NO, Sensitivity: FM≤8uV / AM≤20mV/m, Weight: 45g / 0.1lb, Frequency: FM: 64/87-108 MHz / AM: 520/522-1710 KHz, Size: 85x 48x 13 / 3.3x 1.8x 0.5 inch, Power: Built-in 500mAh rechargeable lithium battery, Working time: ≥10 hours, Charge: DC 5V / Micro-USB jack, Charging time: 2-3 hours
Aliexpress
I could not find it on Aliexpress. Click here to search by yourself.
Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China. Coupons for Retekes V-112 FM Radio? Nope, there’re no coupons in Banggood.
Link: Banggood product page
Price: $-3
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGdf6aa8, BG1b5830, BGAudio3, BGAudio9
(there’s a little possibility that old coupon will work)
Price history and price alert
Do you need price history chart (for all/most countries) for Retekes V-112 FM Radio? There we go.
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)).