You might want to put a cap on the $2.99/m plan, otherwise one huge site could wipe you out. If you do, I'd express that in terms that most small Wordpress sites will understand (like unique viewers, page hits, etc).
I think some here will say "why not just use Cloudflare directly", but I disagree, I think this plugin makes sense. Cloudflare is relatively straightforward for technical users, but many Wordpress users are non-technical. $2.99 is a very small amount for reliable fast images, while also packing a pretty nice margin for you for most users who will need a tiny fraction of that.
I think some here will say "why not just use Cloudflare directly", but I disagree, I think this plugin makes sense. Cloudflare is relatively straightforward for technical users, but many Wordpress users are non-technical. $2.99 is a very small amount for reliable fast images, while also packing a pretty nice margin for you for most users who will need a tiny fraction of that.