You have to do a little thinking looking at the graphs but it's interesting to view. The number of people selling has been holding steady since May. The number of leads is mixed according to which model. I think leads are people who click on the merchants not necessarily completed transactions.
A2
http://www.nextag.com/Toshiba-HD-A2-...e-history-html
A20
http://www.nextag.com/Toshiba-HD-A20...e-history-html
XA2
http://www.nextag.com/Toshiba-HD-XA2...e-history-html