Significantly less, but that's because the sets are "stacked" instead of "side-by-side" and the disc packaging has been streamlined down to booklet size (held together, according to reports, by scotch tape).

From TwOP, here's links to pictures. You might have to scroll through the thread to find the examples I saw: http://btvsfigs.proboards48.com/index.cgi?board=TV&action=display&thread=1124474542&page=4