Maybe what Shelley saw was a marmoset.  They are a monkey of sorts and
rare in captivity so that price of 2000 might be about right.  I've only
seen them in the zoo however, They are adorable and resemble a sugar
glider (of which I owned one, Gizmo, for about ten years).  Maybe she
should check with her local zoo for more info.
 
[GA]
[Posted in FML issue 4695]