From Running Wild:
QUOTE
Note that technocritters
are still rare enough that they are not available on the
open market, and they require specialized black market contacts to
acquire. Accordingly, prices for these critters are not listed below,
and acquiring one (to keep or sell) may require one or more runs.
Yes, this leaves it up to GM discretion. When the majority of the world at large doesn't know the things exist, buying one, even through the black market, becomes problematic.