Aliexpress
Click here… to search for Xiaomi Qualitell ZS1001Pro Wireless Charger White Noise Bluetooth Speaker on Aliexpress
Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
Coupon (59.15 USD): BGHOMEA13
Coupon (61.19 USD): bGhOnEy10
Coupon (61.19 USD): BGCNQZSXM
Coupon (62.99 USD): 7d18f7
(CouponsFromChina.com tip: coupon code has to be applied in shop’s cart after clicking “Proceed to checkout”. Click to copy code and open shop)
Old coupons (from the oldest to the newest): BGQL11, BGUHLK, BGHOMEAPP, BGXMQZSA, BGHOMEAPP13
(these codes were not working in latest coupon update, but you can check them out anyway)
Price history and price alert
Here is price history (for all/most countries) for Xiaomi Qualitell ZS1001Pro Wireless Charger White Noise Bluetooth Speaker.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).