Currently I have these categories available
- Computers
- Sports
- Fun
- Politics
- Music
- Other

Prices are for 1 month
$2.50 for Bronze
$4 for Silver
$7.50 Gold

Basically depending if you buy Gold, Silver or Bronze you're rss feed will show up more often.

You can make purchases via
Supported is 2co and paypal

An example of a feed url is like:
Also supported are podcast feeds

Let me know of any General category you require?