Compared to current costs of geostationary dedicated 1:1 capacity (SCPC), 20Mbps full duplex for $3000 is actually an amazingly good deal. If you're in a place in Africa with no fiber access and your only options for a high bandwidth trunk link to the world are c band satellite, you're looking at $25,000+ to build your own 3.0 meter+ sized earth station and then $1800 to $3000 per individual Mbps per month for leased transponder kHz to reach a teleport in France or Germany. This is one of the problems o3b was designed to solve.