Berry Good themes have launched a new site with the goal of making affordable themes. The British site is selling all their themes at 99p (or $1.65 USD) and they’re pretty good about getting in new themes. What’s great is that they have a free section with 15 free themes that support many of the new OS 5 devices as well as OS 4.7.
Personally, I don’t sideload themes and I have to get them OTA. While I wasn’t able to access the site from my BlackBerry, I found that copying the link and emailing it to myself was the easiest way to OTA the theme. Just check the compatibility under the theme screenshot.