just a listing of sites to search for wordpress themes…

try before you buy: http://www.themedump.com/

http://www.themesplice.com/

http://speckyboy.com/2009/04/20/40-stylish-minimal-and-clean-free-wordpress-themes/

http://www.1stwebdesigner.com/wordpress/minimalistic-clean-free-wordpress-themes/

http://wordpress.org/extend/themes/

http://newwpthemes.com/

http://wpjunction.com/

http://wordpressthemesbase.com/

http://topwpthemes.com/

http://www.amazingwordpressthemes.com/

http://www.smashingmagazine.com/2008/01/08/100-excellent-free-high-quality-wordpress-themes/

http://speckyboy.com/2009/11/05/40-awesome-and-fresh-wordpress-themes/

http://www.hongkiat.com/blog/41-great-looking-free-wordpress-themes/

http://www.wpthemespot.com/

http://www.ndesign-studio.com/blog/wordpress/best-wordpress-sites

http://www.bestwpthemes.com/

http://www.freethemelayouts.com/