Aliexpress
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
Coupon (14.39 USD): BGAFF10OFF
Coupon (14.39 USD): BGCuponation10
(CouponsFromChina.com tip: just apply this code in your cart after clicking “Proceed to checkout”. Click to copy code and open shop)
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): BGZHMJP, BGVDay10%off, BGWXCJP, BGBBMMAJP, BGTTAJP, AFfbG10, BGWAZMJP, BGCDZJP, BGHOMEG12, BGRMPJP, BG68AJP, BGCCRYJP, BGTTBJP, BGYBYDJP, BGNZ99JP, BGCCYBJP, BGMPB2020, BGNZ1099JP, bGhOnEy10, BG999NZJP, BGdragonBoat, BGWADCJP, BGSS10%SW, bgshOOp10, BGDQHOME41, BGHome15%, BGHOMEA15%, BgcLuBofErtA10
(probably won’t work, but you can try them out)
Price history and price alert
Here is price history (for all/most countries) for Loskii DC-01S LED 12/24H Alarm Clock Charger.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).