Marketplace
So basically the XBA series are being phased out hence the cheap prices previously posted and as described in the following link.(review also)
http://www.head-fi.org/t/632053/review-sony-xba-1-and-xba-4/…
These are the non remote version compared the HN deals but still a good price.
The new replacement range is just a colour change with slightly better cables. So the older stuff are the ones to get.