used MPC2000 (non xl)
I bought one for 400 euros about 2 months ago.
no extras, except the memory was fully blown(32 MB)
this was no once in a lifetime thing.
I see them going cheap all the time, the ASR-X even cheaper; bought one in december for 250 euros with max memory and scsci plus OS 2.50
this is, of course, all in the Netherlands, but I see cheap stuff going on Ebay all the time in europe