I need some help setting up MarketPress

I have installed MarketPress and have loaded in all of the product. However, MarketPress isn't working correctly. When you go to the store page and click on a catagory it pulls in all of the product, however the grid is really funky looking and if you click to add anything to the cart it shows up with a huge picture of the product off to the side under the cart.
What would it cost me to have someone go in and tweek the final look for me? Or is that possible?

Here is the page link -- http://clearhealthnow.com/store/