I sell stuff at consumer fairs. In the past, at shows with a fairly small audience I sold an inexpensive item at very consistent rate of about 15-17 items per 1,000 visitors, and another item that is expensive at a rate of 1-2 per 1,000 visitors. This has been at fairs with around 2,000 visitors and about 100 sellers.

I’m going to be selling at a fair with about 40,000 visitors and about 500 sellers and am trying to get a handle on how much inventory I will likely need. Using a 1:1 scale for this may be optimistic, but I’m at a loss as how to guestimate otherwise.

Anyone know of models to look at for this kind of thing?

TIA