You can create price alert here, copy coupons and view price history. You probably want to know what is the best price?
Model P11, Cleaning Mode Clean Mode/Gentle Mode/Massage Mode, Waterproof IPX7, Material ABS/TPE/Dupont Nylon, Smart Timer 2 Minute Auto Timer, Charging Mode USB Charging, Charging Time 2 Hours, Brand Name Fairywill, Package Size 25.5*20.5*5cm/10.03*8.07*1.96in, Frequency 62000 Strokes/Minute
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 Europe 
. I’m not sure about the price, coz I have only 1 record(s) in my database. There is one coupon right now! Check this out.
Link: Banggood product page
1. ($45.11): BG00c906
put item in your cart and apply coupon code there after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGGROC81, BGOCXP91, BGSEXP275, BANGGOODSD, BGNOXP15, BGDU1128, BGHealth06, BGHWTB6, 00c906
(these codes were not working in latest coupon update, but you can check them out anyway)
Price history and price alert
It doesn’t make sense to generate price history chart, because there is one price record which is: $32.99.
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)).