Battery: 3.7V 400mAh lithium-ion, Flying Time: 6-7mins, Package Contents: 1x Drone (Battery Included), 1x G-sensor Controller, 2x Spare Battery, 4x Spare Propeller, 1x USB Cable, 8x Landing Pad, 1x English Manual, 1x Waterproof Storage Bag.
Basically copy coupon, view price history or create e-mail price alert. Let’s see what best price is ATM.
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. There is one great coupon!
Link: Banggood product page
1. ($18.89): BGJJRCH37
just apply this code in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): aff7off, rchobbies8, PCNETWORK, e2bcea, quad20, AFfbG10, BGVDay10%off, BGRC902, bGhOnEy10, 13f142, BGCuponation10
(these coupons are old, so probably won’t work)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. China – JJRC H37 Mini Baby Elfie Drone with Two Batteries ($-3)
Price history and price alert
Price history (for all/most countries) for JJRC H37 MINI BABY ELFIE With 4 Batteries is here. The lowest price was: $18.89.
Price records source(s): Gearbest, 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)).