Why so many Plinius for sale lately


I was curious why there seem to be a lot of the latest versions of Plinius amps for sale lately, like the 100MkIII and the 250MkIV. The asking prices seem to be pretty low, yet they haven't been marked as sold. All the reviews I've read rate them pretty highly.
audiojerry
I'm impressed with my SA 100 Mark 3. Sounds very
tubey,low end detail is stellar,nmanhandles the
bass and for the price a bargin. (1500).
More than any amp I have ever known it must be a
perfect match to the pre used. It is very
high gain almost a live wire so either use a good
passive pre or a Plinius pre for best results.
Probably the one important weakness of Plinius amps is its high frequency extension which is relatively rolled off/muted, so you do not really hear the crispy sparkly sound of live instruments.
The first SA 100 did have problems with hum which was addressed I believe in the Mark III. The Mark three had two separate toridial transformers one for each channel.