I researched these previously related to a VGA connection hack some 6-8 weeks ago.
It's my understanding from reading at that time that the last batch was manufactured earlier this summer and this unit has been discontinued.
All this to say, if you see a unit in a retail outlet and at a price < $100 it will likely be the last one you see.
Ebay, second hand, and surplus resources will soon likely be the only way to find one if that is not already the case now.