The Cello Banjo is available as a 4-string or a 5-string. The 4-string, CEB-4 is intended to be tuned in 5ths, as is a cello (or a fiddle or viola, etc.), and would usually be played with a plectrum. We do not usually stock the CEB-4, but can special order one usually within days.
The 5-string, CEB-5, shown here can be tuned a number of ways. In the video below, it is played tuned an octave low, i.e., aDADE.
It does come with a hardshell case (fortunately, considering that 14-inch pot!).
Gold Tone is now importing a "cello" banjo, having a huge, 14-inch pot.
Hear one of these banjos, or, if you prefer,
see and hear one of these banjos (7mb). Well, OK, the video's contrast is screwed up, but you can get a feel for the size of the instrument, regardless...