What happens while a batch reads
Cards land out of order while a batch reads, and the tab has to stay open until it finishes.
Drop the scans and the batch opens. A panel counts the cards scanned and the cards priced.
When the cards are read and most have a price, the panel loads the pictures at the top of the batch. Then it shows the cards, and the other pictures load while you work.
Cards do not arrive in order, because several are read at once.
Leave the tab open until it finishes. The reading happens in this browser.