Basically copy coupon, view price history or create e-mail price alert. What is 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):
Package Contents: 1x Alcohol Distiller, 1x Water Pump, 1x 1.5m Silicone Pipe, 1x Stand, 1x Filter Bag, 1x Alcohol Thermometer Kit, 1x Teflon Tape, 1x 250ml Measuring Cylinder, 1x Temperature Post, 1x Check Valve with Silicone Gel Plug
Banggood
Banggood warehouse is located in China. I found coupon for you. Check this out.
Link: Banggood product page
1. ($366.22): BANGGOODSD
just apply this code 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): vipupgrade8, 2282CODE, TTxBG10, 2019SPEDM, BGss35, bgssaff9, AFfbG10, BGBFAFF2019, BGCITYADS2019, bGpAnDacHeCk, BGHOMEG12, BGMPB2020, BGAFF10OFF, bGhOnEy10, BGdragonBoat, BGSS10%SW, bgshOOp10, BGHome15%, BGHOMEA15%, BgcLuBofErtA10, 7bcdf9, BGCuponation10, BG10OFFAFF, BGwhielabel, BG10OFFAFF1
(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 Dibosh Alcohol Distiller 35L is here.
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)).