That's next week's PSN Thursday. Dropping a 20 note for the game shouldn't be too difficult to do. After all, you'll be foaming from the mouth to play this -- not from epilepsy mind you, but from the sheer gorgeousness of it. Go on, wipe that chin ... you're staining the carpet.
[UPDATE] Europeans, don't fret. SCEE have told us that WipEout HD will be available on the European PSN on the same day, September 25th.