It should be noted £40 is the RRP in the UK and that no game ever costs RRP. Golden Abyss was avaliable for pre-order at £25 a few weeks back and is £35 at the moment. Further, all games in the UK crash in price a lot faster then anywhere else, GA will be down to £17.99 in a month or so from one of the online retailers.
I think Sony's strategy is fairly sound to be honest - I definitely struggled when I had a DS with the pricing as I just couldn't spend what most games cost. The challenge for them is making the pirces actually correct, a full Uncharted for £40 RRP (So as I said, around £30 - £35) at launch is just fine imo, it gets a bit worrying though if games like Dungeon Hunter start trying to charge that (Which they arn't atm).
We'll see, I always really struggled with the pricing of DS games... they just never went cheap enough for me to bite. For some reason.







