Anyone know where I could get Killzone HD (physical copy)?

I remember seeing one on ebay a while back but didn't pull the trigger because I wasn't about to spend $30 on a $10 PSN game. But now I'm looking for it again because I was going to bite, but now it's nowhere to be found. Where can I get a copy?

Is there a reason you don't want to just get the Killzone trilogy pack, which includes Killzone 1 in HD? You can find that easily for like 20 bucks.

Because I already have KZ2 and KZ3, plus I'm a big Killzone fan and would love to have the box to go along with my other games.