Replacement Headlights

I have 99 GA GT and my headlights look horrible. They have a build up on the inside. Is there something I can do or does anyone know where I can get a good set cheap?

It is not cheap but

http://replacement.autopartswarehouse.com/parts/autopartswarehouse/wizard.jsp?year=1999&make=PN&model=GRAM--006&part=Headlight%20Assembly&dp=true

I checked that site, the lefts are like $1.40 more then the rights, hum? thats strange...