WEMAX S1 Subwoofer Speaker for WEMAX/Xiaomi Laser Projector (Banggood, Aliexpress: only for WEMAX / Mijia laser projection TV (the best price with coupon)).
Basically copy coupon, view price history or create e-mail price alert. What is the best price?
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.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($156.59): BGE13
2. ($161.99): elec
3. ($161.99): AFfbG10
apply it in your 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/feV
Old coupons (from the oldest to the newest): 502C6B, BGBFAFF2019, BGCITYADS2019
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Price history and price alert
Price history (for all/most countries) for WEMAX S1 Subwoofer Speaker for WEMAX/Xiaomi Laser Projector is here. The lowest price was: $145.99.
Price records source(s): Gearbest, 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)).