Just check coupons out (with price alert and history). What is best price?
ITEM NAME: Hand roll piano, DEMO SONG: 80 songs, THE OUTPUT: 2*3W, FUNCTION: Wireless / Teaching, WEIGHT: 1 .8KG, APPLICABLE AGE: All ages, ITEM MATERIAL: Silicone /ABS plastic, CONNECTED DEVICES: Support audio/headset/computer, THE POWER SUPPLY: DC5V 500- 1000mA, 88 KEYS PIANO SIZE: 138.5*20* 125CM, BRAND: Huasky, ITEM DETAILS: Tone/ 128 / Rhythm/ 128
Aliexpress
I could not find it on Aliexpress. 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. We have found one coupon for this product!
Link: Banggood product page
1. ($47.15): BG6d78ac
coupon code has to be applied in shop’s cart 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
Old coupons (from the oldest to the newest): BGMUSIC10, BGToys1, BGRCT10
(there’s a little possibility that old coupon will work)
Price history and price alert
Do you need price history chart (for all/most countries) for Huasky 88 Standard Keys Foldable Electronic Keyboard? There we go.
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)).