Just got this in an email, ends in 19 hours from now.
Good for building drones
Easter Coupon Promotion
Date: 21st April 2019 - 23rd April 2019 10:00am HKT (6:00am GST)
Promotion:
Customers will be entitled a 15% off discount (excluding shipping) when they purchase 70usd (order's subtotal excluding shipping) or above during the captioned period.
Pretty good deal.. best I've seen was 20% on Australia day. Free shipping if you buy $50 worth of stuff from Australian warehouse.