Just check coupons out (with price alert and history). Let’s see what best price is ATM.
5.8G FPV antenna, Props: EMAX Avan 2″ 4-Blades Props, Item: Beta85X FPV, Receiver Option: Frsky XM+ / DSMX / Futaba S-FHSS / Flysky / TBS Crossfire, Weight: 61.88g (without battery), Battery: 4S 450mAh Battery (Not including), FPV Camera: C01 camera, FPV Canopy: Micro canopy, Motors: 1105 5000KV with connector, Flight time: 4min – 6min with 450mAh 4S battery (smooth flight in a windless environment), FC: F4 AIO 12A FC V2
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. There is one coupon available! Pretty cool, huh?
Link: Banggood product page
1. ($169.64): BGJON8
you should apply the coupon in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGc6d3e1, Drones6, CouponsDE, BG53e8fc
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Price history and price alert
Check out price history chart (for all/most countries) for BETAFPV Beta85X 4S 85mm Drone BNF.
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)).