Aliexpress
Click here… to search for Holybro Kopis 2 5Inch 4-6S PNP Drone 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 (215.99 USD): BG28RC
Coupon (278.99 USD): BGMATT7
(CouponsFromChina.com tip: put item in your cart and apply coupon code there 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): BGWKHK, AFfbG10, BGBFCR25, BGCITYADS2019, BGVDay10%off, BGMPB2020, BGAFF10OFF, bGhOnEy10, BGdragonBoat, BGSS10%SW, bgshOOp10, BGRC902, BgoFErTaSchInA10, BgcLuBofErtA10, BG10RACING, BGDAVIS, BGFLYING10, 28RC
(these coupons are old, so probably won’t work)
Price history and price alert
Do you need price history chart (for all/most countries) for Holybro Kopis 2 5Inch 4-6S PNP Drone? There we go.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).