Working temperature: 0’C-40*C, Product color: white, Dumb-jet UV, Charging time: about 2 hours, Battery capacity: 400 mAh, Net weight of product: about 135 G, Standby current: 40wA, Specification Model: MS7000, PC Electroplating, Instrument suction: maximum 62 kPa, Charging Voltage: 5V DC, Material Composition: Transparent PC, Product size: 183 MMX 35mm, Charging current: 300 mA.
Price history, coupons and price alert are available on this page. Let’s see what best price is ATM.
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. I found coupon for you. Check this out.
Link: Banggood product page
1. ($28.46): BGHealth06
apply it in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): BGD37216, 0e7f33, bgshOOp10, bGhOnEy10, BGHB20, BgoFErTaSchInA10, BGSD52469, BgcLuBofErtA10, 13f142, BGCuponation10, BG10OFFAFF, BGwhielabel, BG10OFFAFF1
(I don’t think these’re gonna work, but you can try ’em out anyway)
Price history and price alert
Here is price history (for all/most countries) for InFace Blackhead Instrument. The lowest price was: $18.89.
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)).