>>If we take the reasonable ratio for such companies to be 1 (PSR = 1)...<<
LOL. I will pass on your characterization of a reasonable PSR ratio of 1 for drug development/delivery companies. Instead I might look at a report that does some meaningful analyses like the one below that shows PSRs in the 10-20 range for a range of drug delivery companies. Let's go with a PSR of 15 for GTC given that they offer a unique platform and IP for biologic drug development. Then with sales of $50MM they could be valued at $750MM or >$7 per share. Fun isn't it?