Reading their TOS, it doesn't appear they are actually selling you.
Beyond counting the number of bytes uploaded and downloaded, Spotflux LLC / RaptorVPN...
â—¦ Does not perform deep packet inspection of your traffic, except where necessary for troubleshooting or complying with the law.
â—¦ Does not perform shallow packet inspection of your traffic, except where necessary for troubleshooting or complying with the law.
â—¦ Does not discriminate against devices, protocols, or applications unless they are determined to be harmful to our service or illegal.
â—¦ Does not throttle your connection or purposely timeout your connection.
Still, they have to be getting money from somewhere. Bits don't come free. I'm curious if anyone else can find the catch.