Thomas J. Paladino Jr. wrote:

why are there not more small turboprops available for GA,
and why are they not standard accross more models?

Well as the newsgroup knows.... I'm just a little armchair lurker,
but if I had to stick my tongue out and make a guess, I would
say that right across the board from purchase, operational costs
which includes that dirty word fuel, to that pesky but necessary item
called insurance that the biggest reason that you can't find those
turbine jobbies is because of that dreaded word.... money.