Just check coupons out (with price alert and history). Best price?
Height: 210 mm, Main blade length: 380 mm, Main Drive Pulley: 56T, Length: 755 mm, Drive Gear Ratio: 11: 1: 3.73, Main Rotor Diameter: 850mm, Width: 108 mm, Flying Weight(No battery): 860g, Tail Rotor Diameter: 181mm, Tail Drive Gear: 15T, Main Drive Gear: 121T, Motor Pinion Gear: 11T
Aliexpress
There’re some similar (or not) items on Aliexpress
| Image | Product (link) | Price | Coupons |
|---|---|---|---|
 |
3D RC Helicopter ALIGN 470 T-REX 470LM RH47E01XW 6CH RC Helicopter PNP Fits 450 450L upgrade 470L 380mm main rotor | $784.38 | – |
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.
Link: Banggood product page
1. ($633.43): Drones6
2. ($633.43): CouponsDE
apply it 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): BG470LM15, AFfbG10, 502C6B, BGBFAFF2019, BGAFF10OFF, bGhOnEy10, BGdragonBoat, BGSS10%SW, bgshOOp10, BGheli10, BgoFErTaSchInA10, BgcLuBofErtA10, BGCuponation10, BGDAVIS, BGHONEY2110, BGMATT7, BANGGOODSD
(there’s a little possibility that old coupon will work)
Price history and price alert
Check out price history chart (for all/most countries) for Align T-REX 470LM 470L Dominator RC Helicopter RH47E01XT Super Combo.
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)).