Aliexpress
Click here… to search for Hawkeye Firefly Split Mini Version 4K FPV Camera on Aliexpress
Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
Coupon (81.81 USD): BGGAL8
Coupon (81.81 USD): BGJON8
Coupon (81.81 USD): BGRCParts8
(CouponsFromChina.com tip: this code has to be applied 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): BGCITYADS2019, Email5, BGDGG, 2020CNY, BGVDay10%off, bGhOnEy10, BGSSTE, bgshOOp10, BGRC902, BGTT10, BGFPV50-5, Parts8, BGCuponation10, BGDAVIS
(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 Hawkeye Firefly Split Mini Version 4K FPV Camera.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).