I received my mystery box today; it takes about a week to get to Oregon. It's identical to the picture Melmo posted, so no big surprises. But it was fun for my first fling and I'm pretty happy with the results.

First, a little anecdote about how my first fling came around: about 3 am, Sunday morning, my cell phone wakes me up. I didn't get to it in time, but a message was left. Oh, yay, some jerkwad making a prank call, yelling obscenities. And he was thoughtful enough to leave a message.
There's nothing like a phone call in the middle of the night to wake you up. Must be that "uh oh, must be bad news" anticipation that jolts you awake. I couldn't get back to sleep, so I go online to DVDTalk forums and into the Hot Deals board, which I rarely check. There was a thread about the $3.77 mystery box, which intrigued me. What is this thingfling?
After nosing about the TF forums, especially about the mystery boxes, I thought it sounded fun and potentially lucrative: a hard-to-beat combination. Cool, there was a mystery box coming up! And they take paypal, which is my fun money from my ebay sales! OK, fling me one!
And about 40 minutes later, they were sold out.
So, thanks to that prank call, I found out about it and was one of the few west coasters awake at 6:30 am on a Sunday to get one in time. Maybe this is one of those cases of a bad thing making something good happen.