Price history, coupons and price alert are available on this page. What is best price?
Connection: 3.5MM AUX- IN, Interface Type: USB, Power supply: USB output or 6X AAA batteries, Material: ABS+Metal, Color: Black
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($104.98): BG1d402f
2. ($104.98): BGMUSIC10
3. ($109.64): BG00c906
apply it in your cart after clicking “Proceed to checkout”. Click to copy code and open shop)
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGJUNE11, TTxBG10, aff7off, BGPAYPALSS, AFfbG10, BGAIAO88, BGLiteBT, BGMXN20, 502C6B, BGBBER25, BGFGA30, BGCITYADS2019, BGEGA20, BGVDay10%off, BGAFF10OFF, BGTT10, bGhOnEy10, BGdragonBoat, BGMSNG, BGSS10%SW, bgshOOp10, BGRC902, BgoFErTaSchInA10, BgcLuBofErtA10, BGCuponation10, 13f142, BGHONEY2110, BGJPNUX88, 7bcdf9, BANGGOODSD, 6GSGIT, BG1081b2, 00c906, BG423938, ADMITAD2212, Tabby20
(system checks these coupons on every price check (like once per 24 hours), but you can check them out anyway)
Price history and price alert
Price history (for all/most countries) for NUX Mighty Lite BT Electric Guitar Amplifier is here.
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)).