There are certified Porsche Dealer all over the place. It is also likely that you will find them at general high-end import dealerships in your city. On Porsche's official website there is a wealth of information about where to find dealers as well as their certified pre-owned program.
The last Porsche Boxster I purchased, I paid $85,000. It was a new car although had been used at the dealership and had 1,000. miles on it.
Porsche Boxster was created in 1996.
The 2002 Porsche Boxster has 24 valves.
The 2011 Porsche Boxster has 24 valves.
The 2010 Porsche Boxster has 24 valves.
The 2001 Porsche Boxster has 24 valves.
The 2005 Porsche Boxster has 24 valves.
The 2006 Porsche Boxster has 24 valves.
The 2014 Porsche Boxster has 24 valves.
The 2004 Porsche Boxster has 24 valves.
The 2007 Porsche Boxster has 24 valves.
The 2008 Porsche Boxster has 24 valves.