Mounting size: 102*76mm, Appearance size: 110*85mm, Microprocessor: ARM cortex-M3 CPU, Input voltage: DC12V-DC24V 5A-15A.
Basically copy coupon, view price history or create e-mail price alert. What is the 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 price update (UTC time):
Banggood
Banggood warehouse is located in China. Hmmm… There is no active coupon in Banggood at this moment.
Link: Banggood product page
Price: $-3
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): BGHONEY2110, 13f142
(there’s a little possibility that old coupon will work)
Price history and price alert
Check out price history chart (for all/most countries) for SKR V1.3 32-Bit Smoothieboard Mainboard LCD Display Kit for 3D Printer. The lowest price was: $52.19.
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)).