I searched and was not able to find this posted. My apologies if this is a repost!
Trine is available from the Playstation Store for $9.99 for a "limited time." Regular price is $19.99.
This was the price point I was waiting for. It's a good deal for those that want it for PS3 instead of PC.
I hope this helps!
UPDATE: Amazon just matched the 9.99 price point. Thanks nihar.
Edited by shipwreck, 13 February 2010 - 02:29 AM.