Please also bear in mind that, because it's a raffle system, not an auction--as I'm understanding it--a full boxed Harry Potter book set signed by JK Rowling is basically going for $100. That's how little it takes to be eligible to win something that awesome. You do have to donate specifically "for" a given item to be entered for it, though. Look at the prizes page, you'll see what I mean. I'm down in there somewhere.
Meanwhile, the Screen Actors Guild Awards are going to start up in about fifteen minutes, and I'll be liveblogging those, having had a good nap.