Basically copy coupon, view price history or create e-mail price alert. Do you want to know what the best price is?
product material: ABS, Charging time: about 50mins, battery capacity: 3.7V 350mAh, Package size: 12.9 * 17.9 * 10.8cm, Item NO: R16, Playing time: about 50 minutes, Product size: 8.9 * 15 * 10cm
Aliexpress
I could not find it on Aliexpress. 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. ($18.89): BG1bae7e
2. ($18.89): BGf0d970
put item in your cart and apply coupon code there after clicking “Proceed to checkout”. Click to copy code and open shop)
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
There were country-specific coupon codes published on Couponsfromchina social channels and price alerts. Coupon price may vary by country, because there’re different VAT rates, shipping cost etc. There is a chance that some latest coupons are still working:
Old coupons (from the oldest to the newest): 00c906, BGda1f45, BGc103dc, BG745431
(there’s a little possibility that old coupon will work)
Price history and price alert
Price history (for all/most countries) for Pickwoo Smart Touch Control Robot Singing Dancing is here.
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)).