Equipment Exchange Event?

[DanL]

Noticed on WIScuba.com that a shop in Milwaukee is sponsoring an equipment exchange. Divers bring gear they no longer need and trade/sell it for a day.
This could be done at a shop or maybe even at Square Lake - kind of like a scuba flea market.
Would be nice to do it very soon before the weather gets nasty and before folks pack it in for the winter.
Any interest/suggestions????
DanL