This past weekend I spent (WASTED) a Sunday in 107 degree heat at a book fair.
IF you are a buyer, it is a nice way to spend an afternoon (As long as it's not 107 degrees). You can purchase books at show discounts. Actually meet some of the authors etc. BUT for authors who aren't famous (YET) have no agent or publisher behind them (YET) It's not worth the cost, the time or the effort. In the future I'll be a purchaser and not a seller.