A review theme ideal for full-fledged review sites
Use this theme to review movies, books, etc and provide ratings to them. Features include: homepage slider, rating custom field and list or grid view widgets. You can add multiple products or services, show descriptions in tabs (with a specially created ‘tabber’ shortcode), insert images and your rating.
Price:
Reviews Theme standard $65
Reviews WordPress Theme developer $99
Preview | Download
Link: Review WP Theme

A responsive theme that adjusts to any browser type

Responsive is a portfolio site optimized for all devices.  You can create a portfolio site that will look beautiful on a smartphone or table or monitors.

$35 at Templatic

Theme Features Link: Responsive WordPress Theme

• Responsive WordPress Theme
• Awesome Slider
• Custom Widgets
• Well Crafted Homepage

Check out this list of Premium WordPress Themes 2011 Visit Home Page to see New WP Themes

A fully functional eCommerce theme for selling digital goods
Digital Box is powered by Templatic’s efficient eCommerce framework, that easily allows you to setup a digital products/service website. Multiple payment gateway options are available: paypal, 2checkout, authorize.net, Google Checkout, World Pay and Cash on Delivery.  There is also an affiliate management system to reward people interested in your products.

Price: $99
Preview | Download

A responsive vacation rental booking theme

Vacation Rental is a beautiful theme to showcase properties for rent. Describe your properties using short codes and your photo galleries .

Price:

Single: $65
Developer: 99

Demo Page | Download Theme

Link: Vacation Rental WordPress Theme

Looking for more?  See some of the best, Blog WordPress Themes

A fancy publisher WP Theme

Publisher is a niche theme for publishers, book authors, musicians and artists to showcase and sell digital products online. The theme has integrated payment options for Paypal and e-Jukie, management features and more.

Prices:

Standard Pack: $65
Developer Pack: $99
Templatic Theme Club (all themes): $299

Demo | Download

Link: Publisher WordPress Theme