It’s true that a lot of people are trying to give professional developers bad reputation, because they haven’t met their expectations, but that’s all it really is, just fuzzy fuss with no real proof. I would not recommend using sites like oDesk and eLance to find developers that you can work with, instead outsource them trough friends and recommendations, so you always know who you are going to be working with.
A lot of people will stay away from premium content because they believe in free stuff that is available in plentiful quantities. I believe that premium content (plugins, themes) is what makes you stand out from the crowd and really send a message out there that you are serious about what you do.
The best part is probably the fact that premium stuff for WordPress comes optimized to the latest CSS, HTML and even SEO standards, making it less likely that you will have to worry about those parts of your business. Sometimes you can end up spending thousands for having someone to optimize your site. A simple 50$ theme will do it for you.
Free themes are “okay” and can be modified to your own liking, but the good stuff is going to cost you money, and how much will depend on what you really want. Theme sites like ThemeForest will usually sell themes for 35-50$ a piece and they are great themes, don’t get me wrong. It’s much better to invest $50 than it is to invest $5,000 in a professional web designer.
Great Support, Helpful
Most developers that you buy your premium plugins and themes from are going to provide you with premium quality support, because you are the one paying their bills, even though they do all the hard work of designing and developing. You will definitely appreciate the amount of time and support that premium coders provide.
Less People Having It
If you have a mania where you want to be the only one to have something, then premium is the way to go. It limits the ability for someone to have the same type of design or plugin that you are using. It gives you the chance to shine in the niche that you operate within.
vBSocial Premium Plugins
Like I said earlier, vBSocial believes in WordPress and thus creates premium plugins itself. Some of which include a Facebook like social network, state of art WordPress security, auto image uploading to social networks among many other premium plugins.