C-SPAN selling Stephen Colbert?

I'm somewhat bemused. C-SPAN is selling DVDs of Stephen Colbert's White House Correspondents Dinner Speech. The price is a bit steep for me, but I'm vaguely tempted anyhow. C-SPAN's site says, "Customers who bought this product also bought: Presidential Impeachment Proposals; Downing Street Memos and Pre-War Intelligence; American Presidents Fact Cards; ..."

Of course, I've already seen it. Or, at least, over-heard it while reesei was watching, which is close enough -- I got all the good jokes, and got to ignore the bits that apparently went on too long. What I heard was absolutely brilliant.

You can also watch it on Google Video, according to BoingBoing.