Side Plate Thickness: 1.5mm, Material: Full 3K Carbon Fiber Arms Plate Thickness: 5mm, Brand Name: Flywoo, Top Plate Thickness: 2mm, Color: Titanium, Bottom Plate Thickness: 3mm, Wheelbase: 210mm, Item Name: 210mm F4 Bluetooth 4S 5.1 Inch FPV Racing Drone, Model: Vampire2 HD, Protect Plate Thickness: 2mm.
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Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
Click here to search by yourself. Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($467.77): CouponsdeFPV
2. ($478.16): BGJON8
put item in your cart and apply coupon code there after clicking “Proceed to checkout”. Click to copy code and open shop.
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): BGVampire2, AFfbG10, BGAFF10OFF, bGhOnEy10, BGdragonBoat, BGSS10%SW, bgshOOp10, BgoFErTaSchInA10, BgcLuBofErtA10, BG10RACING, 7bcdf9, BGMATT7, BGDAVIS, Drones6, BANGGOODSD, CouponsDE, 00c906, Tabby20
(there’s a little possibility that old coupon will work)
Price history and price alert
Do you need price history chart (for all/most countries) for Flywoo Vampire2 HD 210mm Drone BNF? There we go. The lowest price was: $332.99.
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)).