$19.99 – Astronaut Galaxy Projector Night Light (Banggood, Aliexpress: Astronaut Galaxy Projector Night Light Gift Starry Sky Star USB Led Bedroom Night Lamp Child Birthday Decoration Remote Control (the best price with coupon)).
When I was updating this page, then coupon price was $19.99 for Astronaut Galaxy Projector Night Light (in Banggood). Just check coupons out (with price alert and history). Let’s see what best price is ATM.
Latest coupon code price check (UTC time):
Banggood ($19.99)
Banggood warehouse is located in China. I couldn’t find any coupon for this product on latest product update. Is it expensive? From what I can see this price is higher than average price ($14.61).
Link: Banggood product page
Price: $19.99
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/feV
Old coupons (from the oldest to the newest): BGa15303, BG589b2e
(you can check these old coupons out, but these 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
Do you need price history chart (for all/most countries) for Astronaut Galaxy Projector Night Light? There we go. The lowest price was: $11.88.
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)).