Pixelmator Pro, the app I use to create 80% of my maps and graphics is currently running a 50% sale.
Pixelmator Pro is a raster and vector graphics app for the Mac. It's easier to learn than Photoshop, performs better and is a fraction of the price. I first switched from Photoshop way back in 2008 and have never looked back.
Disclaimer: I'm not affilitated in anyway with Prixelmator – I'm just a happy user.