Peter
I personally would not buy it. However maybe I should redefine. Me resolution will read: As per the dealer contract "Noone who rents space will be allowed to sell slabbed chips at the convention or other club venues."
You are absolutely correct we would be wrong to not allow someone simply attending the convention to sell or trade what the want.
This however just reenforces the point that the club is not profiting from or supporting slabbed chips.