Hi fehren,
Well it depends if you have time and are a little technical and are a do-it-yourselfer. If you are, then one of our mods Teli has a great free tutorial on how to set up a wordpress blog.
Free WordPress Primer - eBook
If you would rather outsource it my blog designer is awesome, fast a reasonable. He can get a nice customozed blog set up in about a day for around 150 or so.
I have more moeny than time so I always just pay him to do it for me.
He did this one
http://affiliate-blogs.5staraffiliateprograms.com/ and this one:
http://www.affiliatemarketingbuzz.com.