They sold out in 15 minutes, so the price must be right.

Actually, considering it sold out so fast, they should most probably double the price.

If they were doing that full-time, that would put the activity in the $8-10M/year range. I imagine significantly under their annual revenues with apps. Not only would they make less money, they wouldn't learn anything new to talk about. So at $1,000, they're doing you a favor. :)

edit: looks like they didn't sell out in 15 minutes. I guess doubling might be too much then, but the rest still stands.