Price history, coupons and price alert are available on this page. What is the best price?
Waterproof standard: IP65, Material: ABS, Sensing distance: about 3 – 5 meters, Max output: 480LM, Battery: built in 1x 18650 battery, battery capacity 2200 mAh, 0.6W, Sensor detection angle: 90 – 120 degree, Solar panel: 5.5V
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):
Price history and price alert
Price history (for all/most countries) for Beamday HJ001 Solar Wall Light 4pcs is here.
Price records source(s): Gearbest
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)).