Use coupon and get 3.7g RC for 10.34 USD (from Banggood). Price history, coupons and price alert are available on this page. Let’s see what best price is ATM.
Latest price update (UTC time):
Banggood (10.34 USD)
Banggood warehouse is located in China. I’m afraid that there’s no working coupon in Banggood. What about the price? Maybe there’re no more promotions for this item, because current price is higher than average (which is equal 9.73 USD)
Link: Banggood product page
Price: 10.34 USD
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): BGToys8, BGMatt2022, BG25d4e7, BG589b2e
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Aliexpress
Click here… to search for Eachine Tiny Whoop 3.7g RC Frame Kit on Aliexpress
Here are coupons that you can use.
Price history and price alert
Here is price history (for all/most countries) for Eachine Tiny Whoop 3.7g RC Frame Kit.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).