I believe for the AMEX, which is the preferred exc

I believe for the AMEX, which is the preferred exchange Dwyer has mentioned on several exchanges, has 4 standards for entry.  Each standard has a different min. stock price, but for the most part it is either $2 or $3 depending on the standard the company falls under.

http://wallstreet.cch.com/AMEXtools/PlatformV...any-guide/