Could be, but I'm used to seeing initial purchase orders in the thousands for stock like this. Five per store isn't that many when you consider how long follow-up orders tend to take for stock like this (two to four weeks has been the average time in my experience). That said, my experiences haven't been with JB, but another large-ish Australian electronics retailer with a different ordering system (JB has one less layer of bureaucracy with their ordering process).
As far as I know, too, the Touch has been fairly popular. Most of the JB stores I've been to since they started carrying it have had ten or more in stock at any one time. If it is five Glos and one Mini per store, that's really not many.
Maybe I'm just over-thinking this.