there are different meanings to "carbon"
for example, aerospoke is made of "carbon composite" which is just a fancy word for heavy plastic
where as wheels like Mavic IO five-spoke is "carbon fiber"

you can easily call something carbon~ your entire body is made out of carbon so its confusing to ppl when ppl shorten and say something is made out of "carbon" to be short for "carbon fiber"
because.. a wheel made out of "carbon" i.e. beef is carbon ;D, would be a very heavy wheel.
yea?

go find some used aerospokes.
ppl are spitting them out pretty quick because they quickly find how heavy they are.
you need patience and lots of forum browsing (i.e. your local fixed gear forums) but usually $200 used is a good average price to buy at.
and aerospokes being "used" is less important because aerospokes are overdesigned and are pretty bombproof even after extensive use.

good luck.