Just found out about this fantastic offer, CLIP Studio Paint is currently on sale for only $25, which is half the regular price of it.www.clipstudio.net/en/
CSP is one my main digital drawing programs, for me it has been best one for sketching, and especially for creating clean, crisp linearts. The coloring tools are excellent as well. It's got a lot of really useful tools for making comics too, and can even do animation on the most recent versions too. I don't know for how long this deal will going, but I'm sure there's still plenty of time.