Just check coupons out (with price alert and history). What is the best price?
6.5W E27 220 – 240V 450LM 3000 – 5700K Stepless Dimming APP Control
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest coupon and price update (UTC):
Price history and price alert
There is only one database record (it was for $23.99), so you can’t see price history chart.
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)).