Interesting to note the dimensions of the two bikes. Even through the Jackson is listed as 68cm(and the Seven 68.5) it appears to be a larger frame. One reason the Jackson looks larger is the shorter tt(although only 2cm) causing the ht to be closer to the st and therefore longer. That and the c-c measurement(I'm assuming its c-c, but not stated in the listing) show the Jackson is 2.5cm larger that the Seven, and even looks larger than that.
Jackson: 58cm toptube, 68cm seattube, and 28cm headtube
Seven: Top Tube: 60cm Seat Tube 68.5cm (C-T), 65.5cm (C-C) Head Tube: 24cmm
I see it didn't sell with the top bid at only $217(which is ridiculously low). He should just list it starting at his reserve price, might have better luck.
Brian