Use coupon and get RC ERA C189 MD500 RC Helicopter RTF with 2 Batteries for $154.99 (from Banggood). Just check coupons out (with price alert and history). Let’s see what best price is ATM.
RC ERA C189 MD500 2.4G 4CH UAV 1: 28 Fixed Height Single Blade Flybarless RC Helicopter RTF – Red with 2 Batteries
Latest coupon code price check (UTC time):
Banggood ($154.99)
Banggood warehouse is located in China. Hmmm… There is no active coupon in Banggood at this moment. What about the price? Hmmm, price is higher than average (which is $149.75 right now), so better set price alert down below…
Link: Banggood product page
Price: $154.99
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGAUGUST8, BGCAPITALOS8, BGCOUPERT8, BGDBI004, BG4d5287, BG8FORMULAMX, BG7ae185, BGSNS12, BG9f9c80
(probably won’t work, but you can try them out)
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Price history and price alert
Check out price history chart (for all/most countries) for RC ERA C189 MD500 RC Helicopter RTF with 2 Batteries.
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)).