[veidr]

I have paid for several RSS newsreaders, probably a dozen. (More than half because you can't try iOS apps without buying, though.)

I wouldn't pay for a hosted/webapp RSS reader, however, unless it defied the laws of web app design and cached all the data from my feeds before I started reading, switched between feeds and articles with imperceptible lag and no network access, and had the best UI ever made with HTML5. (Likewise, I wouldn't pay for a native app that didn't sync read/unread state across devices.)

In busy weeks, I 'read' HN via NetNewsWire (yeah I want something better, but that doesn't yet exist). It takes about 4 seconds, plus the time for any articles that you actually click and read.

Bonus $$$: I would pay for an RSS reader that let me click stories in the HN feed and, instead of opening them, add both the src article and the HN comments page to Instapaper.