before you get one, please do you reseach. they may small cute little fish, but they do have special needs and are not really for the newbie.
as for cost and where, call around to your lfs and see who carries them. they can vary in price from $1.99 to $9.99 US, depends on teh store.
please read on tank needs, food needs, tempermetn and behavior, etc before you go out and get one though
