Comment Re:supply lines to ISS already secure (Score 1) 200
Just to clarify, a Progress can carry that much away from the station, but you don't get it back in useable condition. The Dragon can (in theory at least) not only carry it away, but bring it back down safely.
Small re-entry capsules have been flown on Progress, but the capacity is limited to a few 10s of kg.
Also bear in mind that price for a seat on a Soyuz is what is advertised, not what is necessarily paid. NASA doesn't seem to be very good at negotiating prices and I'm not aware of any of the "Tourists" saying exactly how much it cost them. Informed speculation ranges between "One seat sold pays for the whole flight" to "There's a healthy profit margin built in".