Basically copy coupon, view price history or create e-mail price alert. What is the best price?
Brand: Happymodel, Item Name: F4 1S Flight Controller AIO ESC VTX Receiver Board, Model: DiamondF4
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China. I don’t think there is an active coupon right now – at least in my database.
Link: Banggood product page
Price: $-3
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): 8wEbgaInS5, pROMo8cuPoN, BG8RCToy, hoNEYbGdeAlS, BGToys1, BGRCT10, BGJUNEGSG9, Cuponation9, COUPONSDE1wk, BGMatt2022, BGGutscheine, BGToys8, BG8OFFCOUPON, TTBLACK5, BGSaleFeb8, BGMARCHSALE, BGAUGUST8, BGCAPITALOS8, BGCOUPERT8, BG8FORMULAMX
(these coupons are old, so probably won’t work)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – Happymodel DiamondF4 ELRS FrSky F4 1S Flight Controller 5A [EU] ($-3)
Price history and price alert
Do you need price history chart (for all/most countries) for Happymodel DiamondF4 ELRS FrSky F4 1S Flight Controller 5A? There we go.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).