I just wanted to give a heads up and pass on a sale going on until March 19, 8:00 AM (UTC/GMT) of 50% off
Clip Studio Paint Pro goes from 49.99 to 25
Clip Studio Paint EX goes from 219 to 109
and the upgrade is also half price.
graphixly.com has it on sale and I think you can buy direct from them, Graphixly sells also on amazon but the sale price isn't listed there.