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 (22.30 USD): BGRCParts8
Coupon (22.30 USD): BGMatt2022
Coupon (22.30 USD): BGToys8
(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): BFHD3, BGdragonBoat, bGhOnEy10, bgshOOp10, BGRC902, BgcLuBofErtA10, BGAFF10OFF, BGCuponation10, BGDAVIS, BGHONEY2110, Parts8, BGRACING1125, BGGAL8, BGJON8, Tabby20, BG1efeb0, 8Couponsde, MVC8SPRING, 8BGwbg2204, tRaDetRaCKeR, 8wEbgaInS5, pROMo8cuPoN, BG8RCToy, BGRCT10, BGJUNEGSG9, BG8ReviTrage, Cuponation9
(these codes were not working in latest coupon update, but you can check them out anyway)
Price history and price alert
Price history (for all/most countries) for URUAV FORCE HD3 118mm 3 Inch Toothpick RC Frame Kit is here.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).