The midcap biotech just became an even better buy.There is a loose relationship between price and quality on the stock market. Penny stocks are overwhelmingly regarded as high risk, while many larger-cap shares trade at high prices.Still, it's possible to find solid businesses whose share prices aren't too high -- perhaps following a recent stock split or because the market is ignoring their potential, or for some other reason. In other words, there is no need to break the bank to invest in quality companie ...