Go down and check coupons out. Remember to check price history if it is available. You probably want to know what is the best price?
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest price update (UTC time):
Tank Size 240x 135x 100 mm (Lx Wx H), Tank Capacity 3.2 L, Unit Size 265x 165x 235 mm (Lx Wx H), Heating Power 100 W / mechanical Heating, AC 220 ~ 240V / 50 Hz, Timer 0-30minutes / mechanical timer, Frequency 40 /000 Hz, Ultrasonic Power 100W, Power Supply AC 100~ 120V / 50 Hz, N.W. 3.5 kg, Material Stainless Steel, temperature 20~80 degree
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($73.59): 8Couponsde
2. ($73.59): MVC8SPRING
3. ($73.59): 8BGwbg2204
4. ($74.39): 2203ActiesNL
5. ($75.19): BG00c906
you should apply the coupon 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/5cd
Old coupons (from the oldest to the newest): BgcLuBofErtA10, BGAFF10OFF, BGCuponation10, 7bcdf9, BGHONEY2110, BGOxy10, BGd0b05d, 00c906, ADMITAD2212, 2022ACTIESNL, Terence, Tabby20, BG1efeb0
(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 JP-020B 100W 3.2L Ultrasonic Cleaner is here.
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)).