When I was updating this page, then coupon price was $11.88 for Astronaut Galaxy Projector Night Light (in Banggood). Just check coupons out (with price alert and history). Best price?
Latest coupon code price check (UTC time):
Astronaut Galaxy Projector Night Light Gift Starry Sky Star USB Led Bedroom Night Lamp Child Birthday Decoration Remote Control
Banggood ($11.88)
Banggood warehouse is located in China. Coupons for Astronaut Galaxy Projector Night Light? Nope, there’re no coupons in Banggood. Low/high price? Looks like this is great price. I didn’t track lower than that in CouponsFromChina database ever.
Link: Banggood product page
Price: $11.88
This is the best price ever noted in my database!
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
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
Click here to search by yourself. Here are coupons that you can use.
Price history and price alert
Check out price history chart (for all/most countries) for Astronaut Galaxy Projector Night Light.
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)).