re: sellers exhausted
A good place to start is by looking at the the ceo's presentation on brr:
www.brr.com.au/event/BZI/1869/11344
Bioshares believe they need to sell 70 machines a quarter to be cash flow positive, although that doesn't include the ongoing revenues from past sales, which is a great $7,000 a year. Hence, when they have 1,000 machines out there (currently around 180) that's income of $7m, with a large profit margin.
Bioshares reiterated their buy recommendation last weekend.
BZI Price at posting:
0.0¢ Sentiment: Buy Disclosure: Not Held