Xiaomi MDZ-33-DA Bluetooth 5.0 Speaker Gold Xiaoai Version (Banggood, Aliexpress: Size L 16.8cmx D 5.8x H 2.45cm, Brand Xiaomi, Color Gold, Mode Little Love Edition, Input Power DC5V/2A, Material Metal, Weight 267g, Play Time 8H (70% Volume Playback), Bluetooth Version 5.0 (the best price with coupon)).
Just check coupons out (with price alert and history). Best price?
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.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China. There is one coupon right now! Check this out.
Link: Banggood product page
1. ($40.99): 13f142
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/feV
Old coupons (from the oldest to the newest): BGXM3699, PICODICOM, BGXMXA, BGXMXAV, BGXMBS99, AFfbG10, 502C6B, BGXMBSG99, BGVDay10%off, BGXMAIS, EARSP11, BGXM108, BGAFF10OFF, BGTT10, bGhOnEy10, bgshOOp10, BGELIG0920, BG11SHOP, BG4BW25, BGLOAC1
(you can check these old coupons out, but these probably won’t work)
Price history and price alert
Check out price history chart (for all/most countries) for Xiaomi MDZ-33-DA Bluetooth 5.0 Speaker Gold Xiaoai Version. The lowest price was: $28.99.
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)).