Just check coupons out (with price alert and history). You probably want to know what is the best price?
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest coupon code price check (UTC time):
Battery: 3.7V 400mAh LiPo, Flying Time: 8~10mins, Package Contents: 1x RC Quadcopter (1x Battery Included), 1x Transmitter, 2x Spare Battery, 1x USB Charger, 4x Spare Blade, 1x Screwdriver, 1x Pair of Sunglasses, 1x English + Chinese User Manual
Price history and price alert
Check out price history chart (for all/most countries) for JJRC H31 Drone With Three Batteries.
Price records source(s): Gearbest
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)).