Main Motor: Brushless 1106 11000KV, Tail Motor: Brushed 0716, Charging Time: About 50-60 Minutes, Flight time: About 6-7 minutes, Body Length: 270 mm, Flying weight: 58.5g, Control Distance: About 120m, Battery: 3.7V 450mAh 25C, Height: 77mm, Rotor Diameter: 245 mm, Brand: XK, Produce: K110 RC Helicopter.
Basically copy coupon, view price history or create e-mail price alert. What is the 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 price update (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($145.65): Drones6
2. ($145.65): CouponsDE
put item in your cart and apply coupon code there 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): BGXK12, bGhOnEy10, BGXK011, BGdragonBoat, BGSS10%SW, bgshOOp10, BG110K, BGheli10, BgoFErTaSchInA10, BgcLuBofErtA10, BGCXY53, BGBFRO7, BGBFRO8, BGBF1131, BGYXC1, BGJP02K110, BGAFF10OFF, BGJPXK216, BGCuponation10, BGDAVIS, BGHONEY2110, BGMATT7, BANGGOODSD, 6GSGIT, BG45b782
(probably won’t work, but you can try them out)
Price history and price alert
Check out price history chart (for all/most countries) for XK K110 RC Helicopter RTF with 4 Batteries. The lowest price was: $103.19.
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)).