I can buy the whole thing pictured for $5 AUD on ebay (http://www.ebay.com.au/itm/12V-Small-PCB-Drill-Press-Drilling-With-0-8mm-Drill-Diameter-28mm-Motor-Diameter-/270934983792?pt=AU_HardwareParts&hash=item3f14fbc470&_uhb=1#ht_4365wt_1141) but I would REALLY like to find just the connector (partly because I have plenty of DC motors).

You'd think if these things are available "built up" all over ebay, alibaba etc, that the collet's must be too, but damned if I can find them.