Clip Studio Paint is having a 50% sale on its software until December 3rd, 2019.

From the screenshot.

Don’t miss out on our Black Friday Sale! Get 50% off of Clip Studio Paint until December 3, 8AM UTC/GMT!
To celebrate Black Friday, we’re giving away a Wacom Cintiq Pro 24 (DTK2420K0) tablet to one lucky winner!!
Click here for more details:
https://www.clipstudio.net/promotion/giveaway/en/