It is indeed! October 3rd from 9am "until everyone leaves," which last year was about 3. The trading stopped a bit before that and those of us remaining were taken on a farm tour (most of the action was in the morning, it slowed down a ton after noon). Some people were talking about maybe having a dinner meetup afterwards this year.
Do come if you're thinking about it, it's lots of fun and full of people who really love their beans! (And I'm probably not going to be able to go again for a couple years, so of course I'm going to encourage everyone to go this year. If people from here come I'll bring special stuff for special TEGN trading.

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Other details: very casual and friendly, all kinds of trading and selling encouraged. Mostly beans by a large margin, then corn, then tomatoes, then everything else. There's a potluck area in the back of the barn that last year was full of good stuff people brought. Berea itself is a nice little college town, with a lovely hill hike just nearby, and there's an inexpensive but nice Motel 6 in the next town just north.
Some of the sellers from last year: Bill Best of course (heirlooms.org), Remy (sampleseeds.com), Frank Barnett, Ed & Joyce Meece, Tony West (appalachianheirloomplantfarm.weebly.com), Southern Exposure Seed Exchange, a couple of nonprofits, and a whole bunch of people without websites but with lots of seed.