I have just checked coupons. The lowest price I could get is 39.09 USD for SYMA S109G 3.5CH Beast RC Helicopter RTF (in Banggood). Just check coupons out (with price alert and history). What is best price?
Latest price update (UTC time):
Banggood (39.09 USD)
Banggood warehouse is located in China. Coupons for SYMA S109G 3.5CH Beast RC Helicopter RTF? Nope, there’re no coupons in Banggood. Is it cheap? Well, this price is higher than average price (32.91 USD)
Link: Banggood product page
Price: 39.09 USD
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): Cuponation9, BGMatt2022, BGToys8, BGGutscheine, BG8OFFCOUPON, TTBLACK5, BG589b2e, BG8FORMULAMX
(these coupons are old, so probably won’t work)
Aliexpress
Here are coupons that you can use.
Price history and price alert
Price history (for all/most countries) for SYMA S109G 3.5CH Beast RC Helicopter RTF is here.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).