$18.89 – 2.4G Intelligent Waterproof RC Boat Ship Wireless Remote Control Devil Fish Creative Toy for Children.
You can get RC Ray Boat Toy for $18.89 using coupon code (in Banggood). You can create price alert here, copy coupons and view price history. Let’s see what best price is ATM.
Latest coupon and price update (UTC):
Banggood ($18.89)
Banggood warehouse is located in China. So I have checked for active coupons (all category coupons and old ones), but there was no working coupon in Banggood. Price? Maybe there’re no more promotions for this item, because current price is higher than average (which is equal $17.73)
Link: Banggood product page
Price: $18.89
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/i1u
Old coupons (from the oldest to the newest): BG589b2e, BG5RCCar, BGRCCar5, BG25RCVE, BG25ALERC
(these coupons are old, so probably won’t work)
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.
Price history and price alert
Price history (for all/most countries) for RC Ray Boat Toy is here. The lowest price was: $14.69.
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)).