Price guides
Set your table prices before the doors open
Checked

Pricing stock on the morning of a show is stressful. A short routine the night before gives you time to check the cards that matter and leaves the day free for buyers.
Start with your higher-value cards
Check the exact printing and look at the available evidence and its date. These are the cards buyers are most likely to look up themselves.
Note where evidence is thin
Some cards have few recent sales. Mark those so you know to price them by judgement and explain that when asked.
Save it for offline
Save the cards and prices you checked to your device. If the venue signal drops, you will still have the evidence you prepared.
Open your collection