Their website only shows the prices for some aspects of the service, mainly just the bandwidth. But where they really get you is by charging high fees for everything else. Their basic rate only includes North America and Europe. You have to pay extra for other locations. Then hosting a subdomain costs $100 extra/month (no idea why, other CDNs do it for free), additional zones cost extra (normally free with other CDNs), no caching rules unless you pay extra, hidden fees for push data storage, etc etc.

Turned out to be the best CDN of the ones we tried (including CloudFront, CacheFly, and MaxCDN). It's by far the best modern, well designed, and easy to use interface. It seems to have every feature we could need, including SPDY support (which CloudFront still lacks), an API that allows easy free cache invalidation, HTTPS SNI, and real-time logging.

It didn't seem to be very fast at first and we almost stopped using them, but it turns out they have an odd quirk where they don't cache pages that don't set a Content-Length header (which PHP pages normally don't). Once we set up a work-around for that issue, it worked very well. Hopefully that's an issue they can fix on their end eventually.