Basically copy coupon, view price history or create e-mail price alert. Best price?
Beast F7 45A AIO board, Naked GoPro ready, XING 2005 2550KV Ultralight motors (Prop mount pattern currently only compatible with iFlight Nazgul Props), Deadcat Frame body, Caddx Nebula Nano Digital HD System, Mini long-range quad, DC (DeadCat geometry) bottom plate / No props in view, GPS pre-installed for more safety at distance, 360° TPU protection / Vista cam protection / and antenna mounts
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China. So I have checked for active coupons (all category coupons and old ones), but there was no working coupon in Banggood.
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!
Old coupons (from the oldest to the newest): BG28bc73, BGDAVIS, BGMATT7, Drones6, 6GSGIT, CouponsDE, BGRACING1125, BGGAL8, BGJON8
(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 iFlight Chimera5 LR HD 4S Drone.
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)).