Is vzaar a CDN?
vzaar is explicitly not a CDN. vzaar is an online video platform.
A CDN is just one of the components of vzaar. We offer an end to end service including an API, a player, uploading, encoding and distribution. Our video platform page (http://vzaar.com/video_platform) explains this more clearly.
Naturally a pure CDN will be cheaper. The same way coffee beans and milk are a lot cheaper than a cappuccino from your favorite coffee shop. We provide value and service over and above that of just bandwidth and that's what our costs cover.