The weather is supposed to be sunny/partly cloudy that weekend.
In the couple of times I've attended, some of the cooler bikes and items were 'not for sale'. Also, I've observed that the booths in the grassy/tree areas are the 'old timers', and their prices generally were on the 'highly optimistic' end of the spectrum. The dealers in the paved parking lot section of the fairgrounds were more likely to have somewhat reasonable prices, and actually 'deal' with you (if you had cash in hand).
There's a Golden Corral Buffet in Modesto I'm eyeing on the way home back north... that'll get my significant other interested in going.