A couple of years ago i picked up 20-25 sets of the Countdown Collection on eBay for about $10. We used them in a sealed deck tournament with 8-10 players. Each player got a countdown set, 3 Reflections packs, 3 ROTK, and 2
Mount Doom packs. Probably the most fun I've ever had playing sealed. We had Sauron and Shelob in the same deck and someone else pulled Elendil and Narsil. Ah, the days of $20 Reflections boxes and $10 ROTK boxes. My brother even got an all foil God Pack of Reflections with as his prize support.
But I'll be honest, it wasn't really about playing sealed as much as it was a LOTR pack opening orgy. It was pretty awesome. I doubt I'll ever see so many boosters in one place again.