Lot
One unit of sale in a show: the single item or grouped items that go up together under one auction or one Buy It Now.
A lot is whatever you are selling right now as one purchase. It might be a single card, a stack of twenty sold together, a full comic run, or a mixed box of items grouped because they are worth more together than apart. The defining feature is that a lot is bought by one buyer in one transaction, whatever is inside it.
Live selling is measured in lots per hour, and that number is the most useful health metric a show has. A seller who moves forty lots an hour is running a different business from one who moves twelve, and the difference is usually preparation rather than talent: lots staged in order, priced beforehand, and within arm's reach.
Grouping is a pricing decision as much as a packing one. Bundling slow items into a lot alongside a desirable one clears shelf space, but it also caps what the good item could have made on its own. Sellers who track what their lots actually realize stop guessing at that trade-off. Our guide on running a Whatnot show goes further into show pacing.