Size 359*158*41mm, Keys Amount 87 Keys, Model K7, USB Wired, Backlit ICE Blue monochrome backlighting, Connection Dual Mode, Black Switch, Color Grey, System Support Windows /Android/Mac OS, Wireless: Support 6 Keys, Weight 730g, Anti-Ghost Key Wired: NKRO, Switch Blue Switch, Batteries 2000mAh Rechargeable Li-ion Battery, bluetooth 3.0, Material ABS.
You can create price alert here, copy coupons and view price history. 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 China. You can get coupon down below.
Link: Banggood product page
1. ($54.89): BGAFF10OFF
apply code in your basket (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): BGkeyboard001, AFfbG10, bGhOnEy10, BGdragonBoat, BGSS10%SW, bgshOOp10, BgoFErTaSchInA10, BgcLuBofErtA10
(you can check these old coupons out, but these probably won’t work)
Price history and price alert
Here is price history (for all/most countries) for MACHENIKE K7 87 Keys Mechanical Keyboard. The lowest price was: $45.99.
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)).