Main Drive Gear: 78T, Tail Blade Diameter: 45mm, Main Blade Length: 120mm, Drive Gear Ratio: 1: 7.8, Body Height: 80mm, Body Length: 255mm, Main Blade Diameter: 271mm, Main Motor Gear: 10T.
Go down and check coupons out. Remember to check price history if it is available. Best price?
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 code price check (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($381.88): BGAFF10OFF
2. ($381.88): bGhOnEy10
3. ($381.88): BGdragonBoat
coupon code has to be applied in shop’s cart 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): 15012, TTxBG10, ALIGN15, BG15015, AFfbG10, BG150X18, BGCITYADS2019, BGMPB2020
(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 ALIGN T-REX 150X TA RC Helicopter RTF? There we go. The lowest price was: $327.99.
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)).