Nozzle Diameter: 0.4 mm, Slicer Software: Easyware K7 / CURA /Simplify3D, Printing Accuracy: 0.1-0.2 mm, Support OS: Windows XP/7/8/10 (32 bit/64bit), FilaFormat: Input: .Stl/obj / output: .gcode, Building Platform: Removable, Gift box Size: 270x100x310mm, Machine Size: 175x235x270mm, Print Technology: FDM, Brand: Easythreed, Power: 12V / 30W, Number of Nozzle: 1, Print Connectivity: TF Card / USB Cable, Diameter of Filament: 1.75 mm, Print Speed: 10-40 mm/s, Building Size: 100X100X100mm, Layer Thickness: 0.1-0.4 mm, Extruder Temperature: 180-230℃, Printing Filament: PLA, Model Name: K7.
Price history, coupons and price alert are available on this page. What is best price?
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 and price update (UTC):
Banggood
Banggood warehouse is located in Europe 
. I don’t know if this is a good price – number of records in my database is too low! I found coupon for you. Check this out.
Link: Banggood product page
1. ($79.98): ADMITAD2212
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): 7d18f7, 13f142, BG85b3c8
(I don’t think these’re gonna work, but you can try ’em out anyway)
Price history and price alert
There is only one database record (it was for $69), so you can’t see price history chart.
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)).