For me it was cheaper to buy a few packets of callibration fluid than those huge bottles that go bad after 6 months anyways. Also It ended up much cheaper buying a bnc breakout, stamp, and probe and packets separately (around 70 dollars). The arduino mega 2560 and shields and what not added another 44.
cool, good find but the set up instructions should help you out.
it would help if you tell us how to get the sweet deal. all through ebay?