back of envelope calculations

After reading the prospectus I took an envelope and jotted down a few figures ( apologies to TDA and others who have done much more thorough calculations )
"World wide sales estimated at 14 Billion"
Lets be conservative and cut that in half to 7 Billion.
Being the most effective treatment available,CHEAP,easy to use
etc.surely we could capture 20% of the market = 1.7 Billion.
Lets say we get a royalty of 15% that gives TIS an income of 210 million.
That is $ 1.25 per share.PE of 8= $10.00 share price.
Well worth waiting for.