I know I'm replying to this horribly late, but if rare/expensive things are your cup of tea, Trade N Games had some choice items last year. Pretty reasonably priced stuff, too. He had a boxed Bubble Bobble 2 for around 100.
From peeking at the website, I see Mad Gear is going to be there as well. He has some really expensive goodies (mostly import stuff). I used to buy a lot of import stuff from him via eBay several years ago. I'll be honest, his prices are on the slightly high side of reasonable, but if you want something crazy, like a copy of Eliminate Down, I'd bet that if he doesn't have it, he can get it. I bought a Twinkle Tale in PERFECT condition from him in the 100ish range before. Good seller.
Hopefully I can head out again this year. Last year was honestly better than I would have expected. I can see me going (or at least attempting to go) to this every year.