Decide on an overall pricing strategy. If you've been attending for over 20 years, I'm sure you've noticed that some folks haul the same items to one meet after another - I think they like displaying their stuff and don't care if they sell it. Other folks price their stuff to sell and end up bringing very little home.
Another option is to post your items on the forum for delivery at York - you might be able to sell everything on Thursday morning before the meet starts and not have to bother with a table.