While I do sometimes enjoy going into my loft, getting my C64 down, dusting it off, coding some classic BASIC and loading some very slow tapes, (purely for nostalgic purposes) I cannot see myself buying this.
As has been mentioned - it's just a PC in a C64 style case running some sort of emulator.
I'd prefer to go with a PC in a PC style case running a C64 emulator - not that I'd want to use it to run illegally downloaded C64 software, but I'd be able to code on it.