As of now, most of our themes support Drupal 7 version.
All of our themes are built with modern best practice to achieve responsiveness on mobiles & tablets to the maximum extent.
It depends on the themes. But mostly, our themes support all major browsers including Chrome, Firefox, IE 9+, Opera, Safari.
You can find compatible browsers on theme details page.
At present, our Drupal theme prices range from $0 - $59.
Currently we don't have our own store to sell themes. But you can buy our themes at marketplaces listed below:
Visit the theme details page & click on any one of the marketplace link available on the page of our website. That will take you to the marketplace website, there you can buy our theme.
DTZ is shortname of DrupalThemez.