Here are a few others that are super cheap and/or sometimes offer free shipping on orders of over $50.
www.europeanautomotive.com
www.eurowebparts.com
www.thepartsbin.com
And my new favorite - the Shell station on Franconia Rd. He has a World Pak account and can get some stuff delivered on the same day. Just got a Mahle air filter for my 993 about 6 hrs. after I called him and for less than Pelican charges - and no shipping. Call Sammy there. He's the guy with the blue 993 C2S.