smugmug is only $150..and if your going to take this seriously(aka your making $) is WELL worth the cost. This is your number 1 choice to look like a legit photographer.
free to setup up..and you only owe them if you actually sell.
my question is, are you going to sell prints or digital downloads? What lab will you use? Taxes? Model release forms? Think you can just put photos of others online for you to make $? Its all situational, i suggest you highly look into it more. You can dig up legal troubles very fast.
if your not selling prints....and your selling to very few people...then just burn the images to a disc and hand it to them...no reason to waste your time on a site which will take you hours/days/weeks to setup.