I was hoping their pricing would undercut some of their competition - doesn't seem like I would save much if I moved from Cloudinary, for example. But definitely something I'll consider on future projects.
I do appreciate this pricing model vs. others like Cloudinary that penalise you for creating more variations. Trying to serve the best image sizes/formats per device is best for the user experience.
Semi-related; I'd like to see Cloudflare improve their CDN performance in the Oceania region.