Well, I can't explain it, because it's been out-of-print due to contract disputes (see director Cory Edwards' explanation here). It's certainly not cheap on Amazon ($30+) or eBay ($50+).
But I ordered (and received) this week a brand-new, sealed copy of the awesome Hoodwinked soundtrack (Top 10 of 2006 for me, here's my review) for about $15 delivered.
I don't know how long this will last, but my guess is, not long. Where is it?
While you're at it, go ahead and listen to Zooglobble Radio. It's still a work in progress, but fun nonetheless.