The relevant snippet from Baron's original post:
Not covered in the interview is why the event costs $40-$45 dollars. You can see High Places or the Walkmen on a pretty regular basis in this city for ten or twenty dollars; Whitehead, when he reads in public, usually does so for free. If this is a benefit for the Guggenheim, they're keeping that fact very much on the DL. Beyond a throwaway comment from Keenan about how events at the Museum "are crucial for the purposes of community-building and fundraising, all the more so during an economic downturn," there's no indication of why the ticket price is so high. Ditto for the Guggenheim's own site. We're less outraged than confused. Why is this event so incongruously expensive? Anybody know?
So, yeah, what he said, but with slightly more outrage than confusion, frankly.