You can create price alert here, copy coupons and view price history. Best price?
Charging Time: about 3-4 hours, bluetooth Version: bluetooth 5.0, Standby Time: 90 days, Compatibility: Compatible with most bluetooth enabled devices, Transmission Distance: 12-15 meters, Battery: 8000 mAh, Frequency Response: 150HZ—20KHZ, Product Model: P1 bluetooth speaker, Playingtime: 8-10 hours, Weight: 1336g, Package Weight: 1386g, Waterproof: IPX5, Power: 20W*2, Product Size: 32*13*17cm/12.59*5.12*6.69in
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):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($78.53): BG651551
2. ($78.53): BGBRPL2
just apply this code in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Old coupons (from the oldest to the newest): BGBuscape01
(system checks these coupons on every price check (like once per 24 hours), but you can check them out anyway)
Price history and price alert
Do you need price history chart (for all/most countries) for Zealot P1 40W Bluetooth Speaker? There we go.
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)).