Aliexpress
Click here… to search for Xiaomi SOLOVE P1 Electric Mosquito Swatter on Aliexpress
Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
Coupon (35.05 USD): tRaDetRaCKeR
Coupon (35.05 USD): 8wEbgaInS5
Coupon (35.05 USD): pROMo8cuPoN
Coupon (35.43 USD): 2203ActiesNL
Coupon (35.81 USD): BG00c906
(CouponsFromChina.com tip: this code has to be applied in your cart after clicking “Proceed to checkout”. Click to copy code and open shop)
Old coupons (from the oldest to the newest): TTxBG10, 2019SPEDM, bgssaff9, BGPSOL169, AFfbG10, BGSP15, BGBFAFF2019, BGCITYADS2019, BGBGHFRI15, 0e7f33, FBCOUPON1, BGSE044, BGSJHome19, BGHome15%, BGSepPro14, BGCNREPELLER, BGSPFEU10, BGAFF10OFF, BGMA0109, BGCuponation10, BGREP1, BGMOSKI05, BGWYIS2505, BGMA3102, 13f142, BG10OFFAFF, BGIS2101, BGwhielabel, BGISXP065, BGISR083, BGISXP196, BG10OFFAFF1, BANGGOODSD, 00c906, BGAlerabat1, Terence, Tabby20, BGHome15off, MVC8SPRING, 8BGwbg2204
(I don’t think these’re gonna work, but you can try ’em out anyway)
Price history and price alert
Here is price history (for all/most countries) for Xiaomi SOLOVE P1 Electric Mosquito Swatter.
Price records source(s): Gearbest, Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).